Childhood, adolescence, and the threshold of adulthood represent the most impressionable periods of the human being's life. The possibilities of uplifting moral character, improving thinking power, and unfolding mystical intuition during such periods are much more than most people believe. Hitler fully realized this truth and turned it to suit his own devilish purposes with such startling success as to vindicate its immense importance. He falsified science and mutilated history, but his greatest harm was to poison the minds of the younger generation with that most dangerous of all infections--hatred. He cunningly taught millions of young boys and girls to think daily and solely of the righteousness of his cause until they came to believe in it with the strong faith that an earlier generation gave to God.
-- Notebooks Category 11: The Negatives > Chapter 3: Their Presence in The World > # 201