" Pratyahara may be termed the process of separating the mind from the illusions of the senses and turning it more and more upon the contemplation of Reality. The mind must be controlled: it must think only when it is told to think and as it is told to think; it must be directionalized by the will of the individual. When man is master of his thoughts and feelings, when he is in perfect possession of his mind, he has accomplished the fifth step. Today the average person cannot think clearly because interest sways his judgment. He thinks in favor of the things he loves and against the things he hates; he blames some people and exonerates others, when both are guilty of similar offenses. This is because the mind is a servant of the senses and is incapable of free and unprejudiced thought. "

― Manly P. Hall , The Spiritual Centers in Man