Success is walking from failure to failure with no loss of enthusiasm.
Solitude is to the spirit what diet is to the body.
No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.
Innovation is the specific instrument of entrepreneurship. The act that endows resources with a new capacity to create wealth.