"Meditation, as taught by the Buddha, is a means of investigating the mind by bringing the entire range of thoughts, feelings, and physical sensations into awareness. This not only makes what we would today call "the unconscious" conscious but also makes the conscious more conscious. There were already various forms of meditation widely practiced in the Buddha's day, but they were all techniques that solely emphasized concentration. The Buddha, before his awakening, mastered each of them but still felt uneasy."