The young worshippers of new art forms in the pop and rock world are the same ones who contributed to the ranks of drug takers and, later, hatha yoga. They need violent thrills to sustain their interest. That is, they are primarily pleasure-seekers, not spiritual seekers. They are governed by moods and impulses.
-- Notebooks Category 11: The Negatives > Chapter 4: In Thoughts, Feelings, Violent Passions > # 56