He Entreats God, that Whatever Useful Things He Learned as a Boy May Be Dedicated to Him
24 Hear my prayer, O Lord; let not my soul faint under Your discipline, nor let me faint in confessing unto You Your mercies, whereby You have saved me from all my most mischievous ways, that You might become sweet to me beyond all the seductions which I used to follow; and that I may love You entirely, and grasp Your hand with my whole heart, and that You may deliver me from every temptation, even unto the end. For lo, O Lord, my King and my God, for Your service be whatever useful thing I learned as a boy— for Your service what I speak, and write, and count. For when I learned vain things, You granted me Your discipline; and my sin in taking delight in those vanities, You have forgiven me. I learned, indeed, in them many useful words; but these may be learned in things not vain, and that is the safe way for youths to walk in.
Source: Confessions (New Advent)