Plutarch, De liberis educandis
Frank Cole Babbitt, Ed.

In this connexion we should speak of a matter which has not been overlooked by our predecessors. What is this? It is that husbands who approach their wives for the sake of issue should do so only when they have either not taken any wine at all, or at any rate, a very moderate portion. For children whose fathers have chanced to beget them in drunkenness are wont to be fond of wine, and to be given to excessive drinking. Wherefore Diogenes, observing an emotional and crack-brained youth, said, ‘Young man, your father must have been drunk when he begot you !’ So much for my views on the subject of birth. We must now speak of education.