I know of a charm by way of a prayer that will preserve a man from the violence of guns and all manner of fire-weapons and engines but it will do me no good because I do not believe it

A man of good sense always believes what he is told, and what he finds written down.

I urge you to spend your youth profitably in study and virtue.... In brief, let me see in you an abyss of knowledge.

Tell the truth and shame the devil.

It's a shame to be called "educated" those who do not study the ancient Greek writers.

Let every one be fully convinced in his own mind.

Frugality is for the vulgar.