The parties to this proceeding were divorced by a decree dated June 15,1921. Prior to the entry of the decree, they, by written stipulation, agreed that, if a decree should be granted, the court might award the custody of the older of their two sons, James Howard Campbell, Jr., then aged about three years, to the father, and might award the custody of the younger son, Malcolm Robert Campbell, aged about fifteen months, to the mother. This agreement was ratified by the decree, and the children were disposed of accordingly, with the right to each parent to visit the child awarded to the other at all reasonable times, and an allowance of thirty dollars per month to be paid to the mother for the support of the child awarded to her.

In October, 1922, appellant petitioned for a modification of the decree, so as to award to him the custody of both of the children, or, in the alternative, that he *517be given the sole custody of the child theretofore awarded to him, and that the amount to be paid for the support of the other child be reduced to twenty dollars per month. Respondent thereupon cross-petitioned for a modification giving her the custody of both children, and increasing the allowance for support to sixty dollars per month.

After a full hearing thereon, the trial court so modified the decree as to award the custody of both children to respondent, with the right in the father to visit them, or to have them visit him on Saturday and Sunday of each week. In all other respects the prayers of the petition and cross-petition were denied. From that order, this appeal was taken.

At the hearing below, each party appeared with a host of witnesses, and each made what appears on paper to be a perfect case — perfection upon his or her own part, and a most appalling lack of perfection upon the part of the other. No human mind can, from the written record, reach a conclusion, with any feeling of confidence, that the truth has been arrived at. Only an omnipotent mind can do that.

Appellant advances two lines of argument here: first, that the evidence shows that respondent was so eager to obtain a divorce that she willingly agreed that her husband should have the older child, in order to avoid a conflict which might have been fatal to her case, and she should, therefore, be held to her bargain. The answer to this is two-fold. We are not satisfied that the evidence shows this mother to have so bargained away her child, and even if that were true, we are not now so much concerned about her wishes as we are about the future welfare of the child.

Second, it is contended that respondent has failed to show a change in conditions since the entry of the *518original decree, or that the child will he better cared for in her custody than it has been while in the custody of the father. This argument assumes that the testimony in her behalf to the effect that there were many changes, that the child had been greatly neglected by the father and abused by his subsequently married wife, is offset by the testimony on behalf of appellant, and we might be forced to so hold were it not that the trial court saw and heard all of these witnesses in person, and it-is hardly conceivable that, in the course of the extended hearing, he failed to note some of the little frequently occurring things which seldom get into the record, and yet which are to the experienced better and safer guides than a mere preponderance in the number of witnesses. Where the evidence is so evenly balanced as it is here, we cannot take from the trial court its responsibility to determine the truth, without at least a sincere conviction that he has erred in that respect. A careful study of all of the evidence in this case has failed to bring to our minds such a conviction. The judgment of the trial court is therefore affirmed.