The adverse force present in his ego will continually try to draw him away from positive concentration on pure being into negative consideration of lower topics. Each time he must become aware of what is happening, of the change in trend, and resist it at once. Out of this wearying conflict will eventually be born fresh inner strength if he succeeds, but only more mental weakness if he fails. For meditation is potently creative.
-- Notebooks Category 23: Advanced Contemplation > Chapter 8: The Void As Contemplative Experience > # 117
-- Perspectives > Chapter 23: Advanced Contemplation > # 45