Jealousy contains more of self-love than of love.

The virtues and vices are all put in motion by interest.

Everyone praises his heart, none dare praise their understanding.

We often forgive those who bore us, but we cannot forgive those whom we bore.

A true friend is the most precious of all possessions and the one we take the least thought about acquiring.

We often make use of envenomed praise, that reveals on the rebound, as it were, defects in those praised which we dare not exposeany other way.

The passions often engender their contraries.