If anyone conceives that he is loved by another, and believes that he has given no cause for such love, he will love that other in return.

I do not know how to teach philosophy without becoming a disturber of established religion.

Sadness diminishes a man's powers

He who lives according to the guidance of reason strives as much as possible to repay the hatred, anger, or contempt of others towards himself with love or generosity. ...hatred is increased by reciprocal hatred, and, on the other hand, can be extinguished by love, so that hatred passes into love.

Statesman are suspected of plotting against mankind, rather than consulting their interests, and are esteemed more crafty than learned.

Hatred is increased by being reciprocated, and can on the other hand be destroyed by love.

If we love something similar to ourselves, we endeavor, as far as we can, to bring it about that it should love us in return.