If the ego cannot trap him through his vices it will try to do so through his virtues. When he has made enough progress to warrant it, he will be led cunningly and insensibly into spiritual pride. Too quickly and too mistakenly he will believe himself to be set apart from other men by his attainments. When this belief is strong and sustained, that is, when his malady of conceit calls for a necessary cure, a pit will be dug unconsciously for him by other men and his own ego will lead him straight into it. Out of the suffering which will follow this downfall, he will have a chance to grow humbler.
-- Notebooks Category 11: The Negatives > Chapter 2: Their Roots in Ego > # 55
-- Perspectives > Chapter 11: The Negatives > # 18