"Man gives every reason for his conduct save one, every excuse for his crimes save one, every plea for his safety save one; and that one is his cowardice. Yet all his civilization is founded on his cowardice, on his abject tameness, which he calls his respectability. There are limits to what a mule or an ass will stand; but Man will suffer himself to be degraded until his vileness becomes so loathsome to his oppressors that they themselves are forced to reform it."