All emotional realizations, with their claims to a false finality, are deceptive. They must pass; the fluctuant moods of the mystic are not reality. We have to think and think our way through to Truth. Such thought must be long sustained and tranquil, hence the need of yogic ability in concentrative thought. When we gain an impetus in meditation practice, we should use it not merely for gaining temporary peace (which is all the peace it can give) but for philosophical study.
-- Notebooks Category 16: The Sensitives > Chapter 2: Phases of Mystical Development > # 193