For one day spent well, and agreeably to your precepts, is preferable to an eternity of error.

A friend is, as it were, a second self.

So it may well be believed that when I found him taking a complete holiday, with a vast supply of books at command, he had the air of indulging in a literary debauch, if the term may be applied to so honorable an occupation.

It was fear that was then making you a good citizen, which is never a lasting teacher of duty.

Not to have knowledge of what happened before you were born is to be condemned to live as a child.

Nobody can give you wiser advice than yourself; you will never err if you listen to your own suggestions.

Through doubt we arrive at the truth.