“Man is not better treated by nature in his first start than her other works are; so long as he is unable to act for himself as an independent intelligence she acts for him. But the very fact that constitutes him a man is that he does not remain stationary, where nature has placed him, that he can pass with his reason, retracing the steps nature had made him anticipate, that he can convert the work of necessity into one of free solution, and elevate physical necessity into a moral law.”