Better to trip with the feet than with the tongue
A bad feeling is a commotion of the mind repugnant to reason, and against nature.
Man conquers the world by conquering himself.
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.
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.