This book is a systematic introduction to Hindu mysticism as it evolved in India through the ages. According to the author, mysticism means a spiritual grasp of the aims and problems of life in a much more real and ultimate manner than is possible to mere reason. This small book gives a brief general outline of some of the most important types of mysticism, indicating their mutual relations, sometimes genetically and and sometimes logically. After describing the sacrificial type of mysticism, it discusses the four chief types of mysticism - the Upanishadic, the Yogic, the Buddhistic and the Bhakti. Their striking characteristics have been briefly touched upon and materials have largely been drawn directly from the original sources. This popular classic is a must-read for all!