Study to sever pleasure from vice. - Vicesimus Knox

I haven't a particle of confidence in a man who has no redeeming petty vices whatsoever.

To flee vice is the beginning of virtue, and to have got rid of folly is the beginning of wisdom.

We must carefully teach children to detest vices for what they consist in; we must teach them their natural ugliness, so that they flee them not only in their deeds but in their minds: the very thought of them should be hateful, whatever mask they hide behind.