Jamgon Kongtrul’s Treasury of Knowledge in ten volumes is a unique encyclopedic masterpiece embodying the entire range of Buddhist teachings as they were presented in Tibet. The Elements of Tantric Practice sets forth the inner system of meditation–that of highest yoga tantra, which comprises two phases. The phase of creation relies primarily on the use of the imagination to effect personal transformation. In the phase of completion, practitioners actually achieve this transformation by the use of powerful inner yogas that manipulate the inner energies and constituents of the mind and body, leading to the realization of the fundamental nature of mind and phenomena. Together these practices constitute, in Kongtrul’s words, a magnificent tradition…cherished by scholars and siddhas of [ancient] India who achieved total realization [by relying] on it.