Every Upanishad begins with a Peace Chant (Shanti-patha) to

create the proper atmosphere of purity and serenity. To study about God the whole nature must be prepared, so unitedly and with loving hearts teacher and disciples prayed to the Supreme Being for His grace and protection. It is not possible to comprehend the subtle problems of life unless the thought is tranquil and the energy concentrated. Until our mind is withdrawn from the varied distractions and agitations of worldly affairs, we cannot enter into the spirit of higher religious study. No study is of avail so long as our inner being is not attuned. We must hold a peaceful attitude towards all living things; and if it is lacking, we must strive fervently to cultivate it through suggestion by chanting or repeating some holy text. The same lesson is taught by Jesus the Christ when He says: "If thou bring thy gift to the altar and there rememberest that thy brother hath aught against thee; leave there thy gift before the altar and go thy way; first be reconciled to thy brother, and then come and offer thy gift." Bearing this lofty ideal of peace in our minds, let us try to make our hearts free from prejudice, doubt and intolerance, so that from these sacred writings we may draw in abundance inspiration, love and wisdom. Paramananda Isa-Upanishad