“Consciousness is that which makes all things and events knowable. Without consciousness eyes could not see, ears could not hear, and mind could not think. Consciousness is like a pure light energy whose power is to make events knowable, just as an electric light makes objects visible. Consciousness could be called the light of lights because it is by its light that all other lights become visible.”

—Timothy Gallwey, The Inner Game of Tennis, 1986; quoted in Experiential Learning: A Best Practice Handbook for Educators and Trainers by Colin Beard & John P. Wilson, second edition, 2006.