What I must do is all that concerns me, and not what people think. This rule, equally arduous in actual and in intellectual life, may serve for the whole distinction between greatness and meanness. It is harder, because you will always find those who think they know what is your duty better than you know it. It is easy in the world to live after the world's opinion; it is easy in solitude to look after your own; but the great man is he who, in the midst of the crowd, keeps with perfect sweetness the independence of solitude.

Good and bad are but names very readily transferable to that or this; the only right is what is after my constitution, the only wrong is against it.