If humility means nothing more than the capacity to learn from criticism, then it has an undoubted value; but if humility means a willingness to submit to authority—to abandon or to modify what one is doing merely because it does not accord with the teachings of the Bible or the thoughts of Chairman Mao—then it is death to the spirit: the proper name for it, indeed, is servility.

p. 289 - The Perfectibility of Man (1971)