Listen now to me as I explain to you all that should be done according to the Yoga doctrine. The unison of intellect and Mind, and all the Senses, and the all-prevading Soul is said to be the highest kind of knowledge. That Knowledge should be gained by one who is of a tranquil mind, who has governed his senses, who is capable of seeing the Soul, who takes pleasure in (such) meditation, who is gifted with intelligence and purity in acts. One should try to gain this knowledge by abandoning those five obstacles of Yoga which are known to the wise, namely, desire, anger, cupidity, fear, and sleep. Anger is conquered by tranquility of disposition. Desire is defeated by giving up all purposes.