A mind without instruction can no more bear fruit than can a field, however fertile, without cultivation.

We do not destroy religion by destroying superstition.

To each his own. (Suum Cuique)

We must not say every mistake is a foolish one.

What we call pleasure, and rightly so is the absence of all pain.

To be content with what one has is the greatest and truest of riches.

There is no duty more obligatory than the repayment of kindness.

The first duty of a man is the seeking after and the investigation of truth.