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

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.

The reason why we have two ears and only one mouth is that we may listen the more and talk the less.

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

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.

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

Happiness is a good flow of life.