The entry into objectless thought-free contemplation may be made year after year and a wonderful state it is too. But however pleasant and peaceful it is, the seeds of negative feelings are not made sterile but are only rendered inactive until new outer circumstances appear which bring them back to life--although the longer their suppression the weaker they become. Only knowledge of the truth and application of its understanding can end the bondage to ego where these tendencies lurk. Hence if the practice of contemplation is accompanied or followed or, although not usual, preceded by the path of knowledge, a real rooting-out of ego-bondage is possible. This alone leads to permanent reform of character and transformation of outlook. It is done by stages, or rather depths of insight, but the final one is quite abrupt.
-- Notebooks Category 16: The Sensitives > Chapter 2: Phases of Mystical Development > # 262