Man is a marvelous curiosity. When he is at his very very best he is a sort of low grade nickel-plated angel; at his worst he is unspeakable, unimaginable; and first and last and all the time he is a sarcasm. Yet he blandly and in all sincerity calls himself the 'noblest work of God.'

Mark Twain and the three R's: race, religion, revolution--and related matters (ed. Bobbs-Merrill Company, 1973)