This book is a study of the mysterious phenomenon of dreams. Dreams have fascinated mankind for ages. Civilisations over time and varied cultures have attempted to interpret the occurrence and meaning of dreams in different ways. Various theories have been extended from time to time to interpret this phenomenon. Dreams are generally viewed as displays of the subconscious and the unconscious which know everything of the past, the present and the future and constitute an interrelation between these. The book analyses the states of thought, the sleep cycle and occurrence of dreams, presenting viewpoints of various religious and cultural traditions like the tantric view, that of the Guiana Indians, the Korean tradition, and so on. It discusses the views of scientists and psychologists on dreams, examining the beliefs of each school — the Freud school, Jung school, Hall school among others — in detail. It classifies dreams in different ways and deals with aspects of contemplation, emotions, and feelings in dreams. It also takes up dream healing and numerology, explaining how one can understand the structure of a dream and its significance and use it for achieving something in life. It contains accounts of dreams experienced by famous personalities in history which were closely linked to their real lives.