Character can be changed. He who habitually contemplates such exalted themes finds in time that his whole outlook is altered and expanded, as if by magic. The new outlook will gradually strongly establish itself within him. Says the Christian Bible: "As a man thinketh in his heart so is he," which may be matched with what was written in Sanskrit long before this was uttered: "As is one's thought, so one becomes; this is the eternal secret."--Maitri Upanishad.
-- Notebooks Category 6: Emotions and Ethics > Chapter 1: Uplift Character > # 48