That which exercises reason is more excellent than that which does not exercise reason; there is nothing more excellent than the universe, therefore the universe exercises reason.

A bad feeling is a commotion of the mind repugnant to reason, and against nature.

All things are parts of one single system, which is called nature; the individual life is good when it is in harmony with nature.

Happiness is a good flow of life.

Better to trip with the feet than with the tongue

Steel your sensibilities, so that life shall hurt you as little as possible.

No matter whether you claim a slave by purchase or capture, the title is bad. They who claim to own their fellow-men, look down into the pit and forget the justice that should rule the world.