All authority must be out of a man's self, turned . . . either upon an art, or upon a man.
Without friends the world is but a wilderness.
Man seeketh in society comfort, use and protection.
The breath of flowers is far sweeter in the air than in the hand.
Truth comes out of error more readily than out of confusion.
It is idle to expect any great advancement in science from the superinducing and engrafting of new things upon old. We must begin anew from the very foundations, unless we would revolve for ever in a circle with mean and contemptible progress.