Tantra is an ancient science dealing with many different systems for increasing the speed of human evolution。 It predates all of the world's existing religions， and thus provides the esoteric basis on which many of these religions were later based。 Tantra provides practical techniques applicable by men and women of every temperament and spiritual level， and aims at turning every action of life into an act of sadhana， or spiritual practice。 It is the aim of this book to provide a practical glimpse into the most important meditation techniques which have their original basis in tantra， so that they may practiced in their original and correct form