Consciousness is 'life becoming aware of its surroundings'. From the primary unit of 'feeling', Consciousness is differentiated into its three aspects - will, wisdom and activity - repeating in miniature the cosmic process in which the triple Divinity ever arises from the One Existence. This book is an aid to the study of the growth and development of Consciousness - basically, a contribution to the science of psychology. The author hopes that the material available here might be useful to some of the toilers in the great field of the evolution of consciousness, and inspire them to contribute their search further. This book is an imprint of the Theosophical Publishing House, Adyar, and is imported from India.