A life well used procures a happy death.
Medicine is the restoration of discordant elements.
A day will come in which men will look upon an animal's murder the same way they look today upon a man's murder.
Mechanics is the paradise of the mathematical sciences because by means of it one comes to the fruits of mathematics.
Necessity is a guardian in Nature.
People reveal themselves completely only when they are thrown out of the customary conditions of their life.