There is no patriotic art and no patriotic science.
The style of an author is a faithful copy of his mind.
Against criticism a man can neither protest nor defend himself; he must act in spite of it, and then it will gradually yield to him.
Hatred is partial, but love is still more so.
Keep not standing fixed and rooted. Briskly venture, briskly roam.
How happy he who can still hope to lift himself from this sea of error! What we know not, that we are anxious to possess, and cannot use what we know.