To revolt is a natural tendency of life. Even a worm turns against the foot that crushes it. In general, the vitality and relative dignity of an animal can be measured by the intensity of its instinct to revolt. – Mikhail Bakunin
Nobody knows what the cause is, though some pretend they do; it like some hidden assassin waiting to strike at you. Childless women get it, and men when they retire; it as if there had to be some outlet for their foiled creative fire. – W. H. Auden
