"Ancient and modern sages asked, 'What is that, the knowledge of which makes everything else known?' and in the same breath replied, 'Knowledge of the Higher Self--the True Man.' So the Supreme Knowledge is that which deals, both in theory and practice, with Man's true nature and his relation to God. It is in fact a natural science without hypothesis, subject neither to change nor time." --Kirpal Singh.  Discusses the need for Self-knowledge and how to achieve it.