From a homily on Romans:

If you wish to leave much wealth to your children, leave them in God's care. For he who without your having done anything, gave you a soul, and formed you a body, and granted you the gift of life, when he sees you displaying such munificence, and distributing your goods, must surely open to them all kinds of riches. Do not leave them riches, but virtue and skill. For if they have the confidence of riches, they will not mind anything besides, for they shall have the means of screening the wickedness of their ways in their abundant riches.