The student achieves the end of ordinary exercises when during the practice period his attention is able to rest introverted effortlessly naturally steadily and unswervingly. This by itself is an unusual achievement and brings with it an unusual sense of inner peace, an indifference to worldly attractions and moods of rapt ecstasy. We need not be surprised therefore that most students are content to stop here. But the philosophic student must proceed farther. He must use this interval of inward silence to attack the ego.
-- Notebooks Category 23: Advanced Contemplation > Chapter 8: The Void As Contemplative Experience > # 151