Franklin Merrell-Wolff begins this series of discourses by formulating ten fundamental assumptions or postulates to establish a base of reference from which the attainment of yogic Realization may be approached. He discusses evolution as a process of becoming conscious on the surface of a Root Consciousness hidden in the depths, and defines ‘yoga’ and ‘religion’ as a bringing together or binding back the surface consciousness to its Root Source. Wolff proceeds to a consideration of the second postulate of periodicity, which he extends to include the principles of equilibrium and dualism—all of which represents the principle of law or karma. He then introduces the trigonometric sine curve to illustrate the action of the law of karma in the periodicity represented by human life cycles and the hyperbolic sine curve to represent the movement to Nirvana. Wolff goes on to contrast the approach to the Transcendent by conscious effort using the preferred and developed psychological function with the approach by means of the inferior function that passes through the unconscious. He concludes by commenting upon the significance of time and the need to be prepared at all times for the Mystical Awakening.