A famous teenage saint from Maharasthra, Gyaneshawara (1275–1296) described the ascent of the kundalini energy in his commentary on the Bhagavad Gita, called the Gyaneshawari, the awakening of this energy is associated with a unique state of consciousness which includes the experience of mental silence: “…the imagination subsides, activity becomes calm, and the functions of the body and mind become still…” (Noyce, 2006).
The ancient Japanese Rinzai Zen tradition also encompasses the idea of non-thought — elegantly and famously described in the Koan with the question: “What is the sound of one hand clapping?” (Hoffman, 1975). The answer is, of course, that there is no sound and similarly, the state of meditation involves no mental activity. The aim of this kind of riddle is to challenge the mind into realizing the futility of rational thought, thus triggering a sudden leap of consciousness toward the trans-mind state, described in the Zen tradition as satori (Littleton, 1996).
In the Buddhist tradition, the Mahayana school’s The Awakening of Faith described several stages in the practice of Buddhist faith, the final one being “the stage of preventing vain thoughts.” In meditative posture the aspirant is instructed that “all kinds of ideas, as soon as thought of, must be put away, even the idea of banishing them must also be put away” (Richard, 1907).