In inventing a model we may assume what we wish, but should avoid impossibilities.

Opinion involves belief (for without belief in what we opine we cannot have an opinion), and in the brutes though we often find imagination we never find belief.

Happiness is activity.

He who has overcome his fears will truly be free.

Happiness, then, is found to be something perfect and self-sufficient, being the end to which our actions are directed.

Man perfected by society is the best of all animals; he is the most terrible of all when he lives without law and without justice. If he finds himself an individual who cannot live in society, or who pretends he has need of only his own resources do not consider him as a member of humanity; he is a savage beast or a god.

Nowadays, for the sake of the advantage which is to be gained from the public revenues and from office, men want to be always in office.