Nietzsche was a genius because he delighted in persecution. Karl Marx was a dangerous maniac. It is only when the feelings of discontent which he tries to explain coincide with those of a whole class, or a whole nation, that the impassioned theorist becomes a prophet, or a hero; while, if he confines himself to explaining that he would rather have been born an Emperor, they shut him up.

Les silences du colonel Bramble (The Silence of Colonel Bramble)