60. Now these men do good to many by preaching what they themselves do not perform; but they would do good to very many more if they lived as they preach. For there are numbers who seek an excuse for their own evil lives in comparing the teaching with the conduct of their instructors, and who say in their hearts, or even go a little further, and say with their lips: Why do you not do yourself what you bid me do? And thus they cease to listen with submission to a man who does not listen to himself, and in despising the preacher they learn to despise the word that is preached. Wherefore the apostle, writing to Timothy, after telling him, "Let no man despise thy youth," adds immediately the course by which he would avoid contempt: "but be thou an example of the believers, in word, in conversation, in charity, in spirit, in faith, in purity."