delivered the opinion of the Court.

On March 31,. 1932, the former District Court of San Juan rendered judgment in an action for support brought by Carmen Sacarello against Ricardo Rubio-Ríos ordering the defendant to pay to the plaintiff a monthly allowance of $75 *334as of December 1, 1931.1 The same court had sentenced Rubio on February 2, 1932 for abandonment of minors, consisting in that he did not provide support for his minor son, Ricardo Enrique Rubio-Sacarello, and sentenced him to serve 90 days’ imprisonment in jail, but suspended the sentence on condition that the defendant deposit the sum of $50 monthly, commencing February 1932.2

By deed No. 37 of May 17, 1933, executed before Notary Pablo Andino-Espejo, Ricardo Rubio and Carmen Sacarello, after making reference to the aforesaid judgments, stated that “they have reached an agreement for a sum certain, to be secured by mortgage, for the support of Carmen Sacarello and of her minor son.” To that end, Rubio recognized in favor of Mrs. Sacarello, “for her support and that of her minor son,” the sum of $5,500, which he bound himself to pay within the period of one year, with interest thereon at the rate of 12 per cent annually, payable in monthly instalments as they became due. The executing party agreed to desist from the action for permanent support and to file a motion in the action for abandonment of minors, “stating under oath that the judgment had been executed and carried out as respects the allowance.” In order to secure the payment of the principal sum of $5,500, interest thereon at the rate agreed upon, and a $500 credit for costs in the event of foreclosure, Rubio *335constituted first voluntary mortgage in favor of Mrs. Saca-rello on his property situated in the wards of Antón Ruiz and Mambiche, of Humacao. It was further agreed that the mortgagee would not claim any sum for costs within the aforesaid civil action, since she would pay out of the “amount received” the costs incurred, including attorney’s fees. It was also stated in the deed that Carmen Sacarello had received the sum of $275 which had been deposited with the clerk of the District Court of San Juan by way of allowance for the minor.

This deed was presented in the Registry of Property of Humacao and recorded by means of an entry which in its pertinent part reads as follows:

“ ... And by virtue of the instrument object of this entry, the said Ricardo Rubio Rios, of full age, divorced, property owner, and resident of Humacao, recognizes in favor of Carmen Sacarello, of full age, without any special profession, divorced, and a resident of San Juan, for her support and that of her minor child, the sum of $5,500, which he binds himself to pay within the period of one year counted as of May 17, 1933, with interest thereon at the rate of 12 per cent annually, payable monthly as it becomes due, until payment in full. The said Carmen Sacarello accepts the said amount and binds herself to desist from the action for permanent support and to file a motion in the case of The People of Puerto Rico versus Ricardo Rubio, for abandonment of minors, setting forth under oath that the judgment has been executed and carried out as respects the allowance, and further consenting to the annulment of the attachment on Rubio’s property... It is expressly agreed that Mrs. Sacarello may not claim from Rubio any costs in the aforesaid civil action, since she binds herself to pay the costs and the attorney’s fees out of the amount received by her... Mrs. Sa-carello recognizes in favor of her attorney, Ricardo H. Blondet, a credit for $1,500, which amount comprises his attorney’s fees in all the actions in which he has represented her, the costs paid by him, all the expenses, which she will pay to him when Rubio pays for the said mortgage...”

*336On August 1, 1933, Mrs. Sacarello and Lie. Blondet assigned the mortgage credit to Edmond Block,3 including the monthly interest payment which had accrued as of July 18. Block instituted a summary proceeding for collection of the mortgage credit, and while only the judicial sale was pending he assigned it to Antonio A. Roig, who proceeded with the foreclosure which resulted in the adjudication in his favor of the mortgaged property. The assignments as well as the adjudication were timely recorded.

In January 1937, the brothers and sisters Enrique José, Ivette, and Margarita Amalia Rubio-González and Amalia González .widow of Rubio, as heirs of Ricardo Rubio-Ríos, brought an action to revendicate the property foreclosed and adjudicated to Roig. Possessor Roig and Ricardo Enrique Rubio-Sacarello were joined as defendants, the latter having refused to appear as plaintiff. There was alleged the nullity of Roig’s title based on the “nonexistence” of the mortgage credit which gave rise to the foreclosure, and which represented a compromise on “past and present support,” and all of •which appeared from the Registry of Property, thereby charging the subsequent acquirers with knowledge of these facts. Carmen Sacarello was summoned in her capacity as mother with patria potestas over her defendant minor child. Three years later Amalia González, personally and in behalf of her three plaintiff children, and Carmen Sacarello, in behalf of her minor son, Ricardo Rubio-Sacarello — sole and universal heirs of Ricardo Rubio-Ríos — filed a petition for authorization to compromise the action brought. The corresponding hearing having been held, the court granted the petition, and after defendant Roig deposited the sum of $2,000 for distribution among the aforesaid four minors, “Amalia González widow of Rubio and her children, the plaintiffs Rubio-González, and defendant Carmen Sacarello and her son, Ricardo Enrique *337Rafael Rubic-Sacarello, executed a waiver in favor of Antonio A. Roig, of any right, interest, and share which they may have in the property object of the litigation.” It appears from the record of the said action that the sums deposited in favor of the minors were withdrawn upon motions made by their respective mothers in order to take care of their needs and to pay the attorney’s fees.

Fifteen years later the four children of Ricardo Rubio-Ríos filed another action of revendication against Roig, setting forth substantially the same allegations as in the previous action, and also specifically challenging the validity of the compromise and of the judgment rendered in such action of revendication. The trial court dismissed the complaint and appeal was taken.

I

Article 1713 of the Civil Code, 1930 ed., 31 L.P.R.A. .§ 4825, provides that no compromise can be made with regard to future support. Scaevola 4 comments that this prohibition is reasonable “in view of the scope of the support, which is a right of successive performance, of changeable amount and consequences to the life or subsistence of the persons, with characteristics frequently of public interest.” Castán 5 justified it on the ground that the right to life can not be renounced.

According to the allegations of the plaintiffs, their own predecessor performed the act of compromise, as supporter, of future support and also the unlawful act of constituting a mortgage to secure the sum which he admittedly owed as a result of such compromise. Clearly, the plaintiffs seek to rely on the illegality of the acts performed by their predecessor to request the courts of justice to set aside all such acts. However, according to § 4 of the Civil Code, acts executed contrary to the provisions of law are void, 31 *338L.P.R.A. § 4; Sánchez v. Coll, 69 P.R.R. 863 (1949); Compañía Popular v. District Court, 63 P.R.R. 116 (1944), but the author or participant of the illegal act can not appeal to the judge to demand its annulment. It is so provided in the maxim nemo auditur suam turpitudinem allegans, which is positively expressed in § § 1257 and 1258 of the Civil Code, 31 L.P.R.A. § § 3516 and 3517.6 A similar prohibition applies to the successors and heirs of such author or participant, Judgments of the Supreme Court of Spain of March 9, 1900 (89 Jur. Civ. 347) and May 6, 1902, sale of reservable property made by the father to the detriment of his child (X Jurisprudencia Referente al Código Civil 552).

In referring to the identical provisions of the Spanish Code — § § 1305 and 1306 of the Spanish Civil Code— *339Pérez and Alguer 7 say “The party guilty of the illegality has no right and action at all: nemo auditur suam turpi-tudinem allegans, nemo de improbitate sua consequitur actio-nem (citations), which principles, if applied to the contract already executed, constitute a particular exception to the rule of radical nullity of the illegal compromise.” Dualde 8 states that “The illegal consideration is not contractual consideration, so that the contract is frustrated in its generation. The conveyances carried out under these conditions are not subject to the general regime of the enrichment without consideration, but to the special regime of nemo auditur governed by § § 1305 and 1306. The contracting party who is not guilty of turpitude may exercise the in rem verso, or of enrichment without consideration, while the contracting party guilty of turpitude may neither claim nor demand the performance of the promise.” Manresa 9 explains that although § 1306 refers to the consideration, “in view of the connection of the latter with the object and the analogy with § 1305,” the same consequences apply to the considerations in which the illegality arises from the objective element of the contract. Castán,10 Scaevola,11 and Valverde12 share the same view. See Ferrara, El Negocio Jurídico 502 et seq. (translated by Manuel Albaladejo). The case law of the Supreme Court of Spain is categorical in this respect. Thus, in its Judgment of November 11,1895 (Jurisprudencia del Código Civil 584, 593) it declares that “even though under § 1302 of the Civil Code the action to annul contracts may be brought by any person principally or subsidiarily bound *340thereby, this principle, which has its evolution in the following sections, has been modified in those cases in which the nul- ' lity arises from turpis causa or illegal consideration by § § 1305 and 1306, which deny to the guilty parties any action against each other, whether or not the act constitutes an offense or fault.”

Hardly one day ago we invoked the rule of nemo auditur in connection with a claim arising from a wager contract, and we refused to lend assistance to a party which demanded the fulfillment of the promise upon being favored in a raffle sponsored by the defendant. Serra v. Salesian Society, ante, p. 311; cf. Saavedra v. Saavedra, 46 P.R.R. 226, 227 (1934); Fernández v. Laloma, 56 P.R.R. 348, 360-61 (1940). And the fact is that one who makes use of his own turpitude does not deserve the protection of the courts. The lawmaker prefers to maintain the situation of fact resulting from the illegal act rather than give access to the courts to the request of annulment of the act contrary to law in which the plaintiff has been author or coparticipant.13 Possessiones melior condictio habetur.

Assuming that the contract executed between the parties were one of compromise on future support which they., guaranteed by constituting a mortgage, which was after-wards foreclosed and culminated in the adjudication of the , mortgaged property in favor of defendant Roig, it is clear *341that there was “turpitude” in the initial act on the part of the predecessor of the plaintiffs. For that reason, his heirs are barred from claiming now and precisely invoking the act contrary to law in which their father himself was, if not the principal actor, at least its coparticipant. Moreover, one' who owes security can not demand it.

r-H hH

There is a further reason why the plaintiffs can not prevail, even assuming that the contract of compromise which gave rise to the mortgage contract were nonexistent. Having examined the registry record upon the presentation of the mortgage deed executed between Ricardo Rubio, predecessor of the plaintiffs, and Carmen Sacarello, the only conclusion is that defendant Roig is a third party protected against the action now sought, according to the provisions of art. 36 of the Mortgage Law, 30 L.P.R.A. § 61, in connection with art. 37 of the same Law, 30 L.P.R.A. § 62.

The said record refers to the fact that Rubio “recognizes in favor of Carmen Sacarello .. . for her support and that of her minor child the sum of'... which he binds himself to ' pay within the period of one year ... which amount the said Carmen Sacarello accepts, binding herself to desist from the action for permanent support and to file a motion in the case of The People of Puerto Rico versus Ricardo Rubio, for abandonment of minors, setting forth under oath that the' judgment has been executed and carried out as respects the'1' allowance...” Nowhere in the entry recorded express reference is made to the fact that Carmen Sacarello or her minor son then waived their right to future support from the obligee. Only by way of interpretation, indeed quite constrained, may such fact be inferred from the portion copied above. The registry record is in fact more compatible', with : the version that the compromise involved support accrued, up. ■■ to the execution date. .

*342 It is known that rescissory or resolutory actions “which owe their origin to causes which specifically appear in the registry” affect third parties, art. 37 supra of the Mortgage Law. A contrario sensu, when the cause of nullity is not stated explicitly, when it does not appear clearly from the registry, the third acquirer is fully protected by the record. In his outstanding treatise Derecho Hipotecario, Vol. I, p. 453 et seq. (1954 ed.), Roca Sastre states that the causes of nullity may appear in the registry either as “cause embodied in an entry, because it constitutes a circumstance which is part of or derived from the recorded act and is stated in the entry as an inherent element or authenticated reserve,” or as “cause of an entry, because it gives rise to the latter’s intention or is its principal object.” As regards the former, “the destructive cause is naturally recorded or appears in the registry synchronically or simultaneously with the act object of such entry.” And he adds:

“With respect to the causes embodied in an entry, the same shall appear clearly in the registry whenever they involve express and real conditions incorporated in the recorded act (for example, whenever the obligatory agreement or conventional redemption, etc., is stated in the sale). The same will be true in the case of causes arising from reservations or warnings clearly stated in the entry, whether they are stated in the title proper or appear from the record. On the other hand, such causes will not be so explicitly recorded whenever they are derived from the integrating circumstances, natural or agreed upon, of the act recorded, determinative of the nature and extent of the right recorded, which must necessarily be set forth in the registry according to art. 9 of the Mortgage Law, as well as whenever the act or the supposition which may give rise to a nullity or resolution (or rescission) is not set forth at all in the record.”

It is fitting to refer here to the Judgment of December 30, 1944 (VIII Jur. Civ. 920, 2d series) which, in referring to an acquirer in good faith, declares that one who has sufficient knowledge of the causes which may invalidate the right of the transferor ceases to be such, but not so in the case of *343one who “only finds himself in the presence of vague indicia which leads him at the most to suspect their existence.” (At pp. 454-55.)

We apply here the language employed in the opinion rendered in Banco de Ponce v. Registrar, 72 P.R.R. 123, 127 (1951), in which it was said that “the safety and certainty which must appear from the books of the registry regarding the condition of the title and encumbrances of recorded properties, and the transactions affecting them, can not suffer the entries therein to rest on suppositions or constructions.” Similarly, the causes which will undermine public faith in the record should not be left to arbitrary interpretations requiring specialized knowledge, but they must appear clearly from the registry itself, particularly in the case of causes embodied in an entry which were canvassed by the registrar without discovering the alleged cause of nullity. The statements made by the noted Puerto Rican mortgage-law commentator Mr. Justice Texidor, in his dissenting opinion in Pérez v. Díaz, 41 P.R.R. 345 (1930), who in referring to the causes which are explicitly set forth in the registry said, “so an examination by an attorney specialized in Mortgage Law is not contemplated; but only that any person of average education may see whether or not the cause or nullity appears from the registry.” The defect or vice must be “reasonably apparent.” Ayllon et al. v. González et al., 28 P.R.R. 61, 69 (1920), aff’d, Fernández & Bros. v. Ayllon y Ojeda, 266 U.S. 144 (1924); cf. Lizardi v. Caballero, 65 P.R.R. 77 (1945); Cruz v. Heirs of González, 72 P.R.R. 291, 299 (1951); Hernández v. Caraballo, 74 P.R.R. 27 (1952); Pérez v. Cancel, 76 P.R.R. 625 (1954).

After discussing the scope of the synonymy between appearing clearly and stating explicitly, Barrachina (I Comentarios a la Ley Hipotecaria 273, 1910 ed.), sums up in his commentaries the problem under consideration as follows:

*344“When there is lack of clarity and expression in the rescis-sory or resolutory causes which give rise to the actions of their respective names, aimed equally at invalidating the juridical act, the third party can not be prejudiced. Those causes must be tstated in the record concretely, conclusively, so as to dispel any 'doubt,' in order to forestall any dangers and deceit which may .inure to the contracting party in good faith; they must •impress the senses, be self-evident, loithout the need of infer- ; ring or deducing them. The third party must find that cause in the record, stated with such clarity and precision that he can not but admit it, necessarily surrendering to its forceful consequences; for although the ignorance of the law does not excuse compliance therewith, the study of causes which modify .the.'facultas' agendi and the appreciation of their scope is not .the task of a layman having no knowledge of law, but of a person well-versed therein; and not everybody is a lawyer who can consult the registry books and determine whether from the history of the property, in the case of implied resolutory actions, the right of- the person who conveyed or encumbered the re- ,- corded real property is extinguished in what cases and how.” .(Italics ours.)

In view of the foregoing, we can not deny to de- , ,f endant .Roig the protection of the public faith in the registry. Since the cause of nullity does not appear explicitly, „ the action brought against him for the second time is untenable. It does not seem too late to recall, in general terms. ,.,that resort is had to the. registry, in search of protection and not prejudice.

HH 1 — I > — 1

The trial court concluded that the $5,500 debt recognized by the predecessor of the plaintiffs, the payment of which was secured by the mortgage constituted on the property object of revendication, covered, among other things, allowances already accrued which may be freely compromised. It is necessary to examine the question in order to dispose adequately of this litigation.

,.v ;Manresa, as well as the authors cited above, justify the prohibition to compromise future support “on powerful moral *345reasons which can not he concealed,” 14 namely, the reason already stated that a compromise on support “would amount to renouncing life in a way.” He adds, however, that the prohibition does not extend to allowances accrued or due, because from their maturity date they become part of the patrimony of the person receiving the support, that is, that they constitute a credit which may be compromised. Seae-vola 15 and Oyuelos 16 share the same view, the latter also-basing his assertion on the language of § 1713, which refers only to future support, distinguishing it from past-due support. This author further states that the prohibition to compromise must be understood exclusively in connection with the essential, namely, the right to receive them, but not with the accidental, such as “the time to receive them, from whom they are received, and the place to receive them.”

It having been established that the support accrued may be validly the object of compromise, we must now determine the scope of the prohibition of future support. Oyuelos asserts that § 1713 is the result of § 149, 31 L.P.R.A. § 568, which provides that the right to receive support “cannot be waived or transmitted to a third party,” and that it is not subject to compensation. It will be noted that the latter provision refers exclusively to support, between .relatives, namely, those derived from the existing relationship between the parties, and that it does not include the support due the divorced wife. The fact is that upon incorporating § 1814 of the Spanish Civil Code — counterpart, we repeat, of § 1713 of Puerto Rico — it could not have been intended to comprise within its ambit the support of the divorced wife,' since it is well known that our § 109, which consecrates the latter’s right, has no counterpart in Spain, where divorce is not recognized as a cause for dissolution of the marriage,- - but it was taken from § 160 of the Civil Codé of Lousiaria, Dart, *346La. Civil Code 102 (2d ed.).17 That state has sanctioned the compromise of the divorced wife’s right to receive alimony, Abbott v. Abbott, 5 So.2d 504 (La. 1941); Brown v. Brown, 153 So. 537 (1934).

It is interesting to note that Scaevola, in commenting that provision, cites Planiol and Ripert, who, in referring to the situation in France, says that “Those rules (prohibition of compromise on future support) apply to the support debt, properly speaking, recognized by law. But even the jurisprudence makes an exception as respects the support due the wife in the event of divorce by the husband and father of his innocent and needy spouse: in this case it convalidates and renders final any compromise freely consented to in connection with such support, adducing as ground that it has the character of indemnity of a quasi-offensive injury (ex-tracontractual), and that the compromise for the reparation of an offense or quasi-offense is not prohibited at all.” (At 349). In our opinion, the alimony of a divorced wife as innocent spouse in the action may be assimilated to the support due by virtue of an agreement or testamentary provision in connection with which there is no question that it can be •compromised.18 Cf. Viera v. Heirs of Goitía, 55 P.R.R. 291, 302 (1939); Valdés v. Hastrup, 64 P.R.R. 569 (1945). This being so, Mrs. Sacarello could validly compromise as to future support.

*347It remains to consider the problem relative to future support for the minor child. We can not hold that the oft-mentioned agreement covered such compromise (1) because there is no express statement to that effect; (2) nor had any civil action been brought in the name or for the benefit of the minor claiming support; and (3) the contract executed between the parties could only conceivably cover the support accrued up to the date the same was signed, as determined by the court as a condition for suspending the judgment rendered in the criminal action for abandonment of minors, in which the aggrieved party was The People. That is why the obligation assumed by Mrs. Sacarello as respects the judgment rendered in that proceeding was confined to the filing of a motion stating under oath that the judgment has been executed, and carried out as respects the support. Clearly, it could only refer to the support accrued.

We need not discuss the question of res judicata in view of the conclusions made.

The judgment rendered by the Superior Court, Humacao Part, on February 18, 1957, will be affirmed.