Ordinarily he was insane, but he had lucid moments when he was merely stupid. — Heinrich Heine. German poet, writer, and literary critic (1797–1856) Sanity, Stupidity
The weather-cock on the church spire, though made of iron, would soon be broken by the storm-wind if it... did not understand the noble art of turning to every wind.
Be entirely tolerant or not at all; follow the good path or the evil one. To stand at the crossroads requires more strength than you possess.