Theories are of very little value; because a man who is constantly in conflict with environment, both the past and the present, is continually discerning, penetrating, trying to understand, and therefore he is living completely in the present. To such a man there is no need for theories or explanations. But that requires great persistence of thought, great awareness, great penetration into the true significance of ever changing environment. As the majority of people cannot do that, they accept theories which become their masters, facts, realities.