Wicked men obey out of fear. good men, out of love

Inferiors revolt in order that they may be equal, and equals that they may be superior. Such is the state of mind which creates revolutions.

Whether we call it sacrifice, or poetry, or adventure, it is always the same voice that calls.

We should venture on the study of every kind of animal without distaste; for each and all will reveal to us something natural and something beautiful.

Those that deem politics beneath their dignity are doomed to be governed by those of lesser talents.

Democracy is the form of government in which the free are rulers, and oligarchy in which the rich; it is only an accident that the free are the many and the rich are the few.

A change in the shape of the body creates a change in the state of the soul.