from the heart run upwards and downwards, as also in oblique directions; they carry the best essence of our food, and are acted upon by the ten Prana airs.  This is the way by which patient Yogins who have overcome all difficulties, and who view things with an impartial and equal eye, with their souls seated in the brain, find the Supreme Spirit, the Prana and the Apana airs are thus present in the body of all creatures.  Know that the spirit is embodied in corporeal disguise, in the eleven allotropous conditions (of the animal system), and that though eternal, its normal state is apparently modified by its accompaniments,—­even like the fire purified in its pan,—­eternal, yet with its course altered by its surroundings; and that the divine thing which is kindred with the body is related to the latter in the same way as a drop of water to the sleek surface of a lotus-leaf on which it rolls.  Know that sattwa, rajas and tamas, are the attributes of all life and that life is the attribute of spirit, and that the latter again is an attribute of the Supreme Spirit.  Inert, insensible matter is the seat of the living principle, which is active in itself and induces activity in others.  That thing by which the seven worlds are incited to action is called the most high by men of high spiritual insight.  Thus in all these elements, the eternal spirit does not show itself, but is perceived by the learned in spiritual science by reason of their high and keen perception.  A pure-minded person, by purification of his heart, is able to destroy the good and evil effect of his actions and attains eternal beatitude by the enlightenment of his inward spirit.  That state of peace and purification of heart is likened to the state of a person who in a cheerful state of mind sleeps soundly, or the brilliance of a lamp trimmed by a skillful hand.  Such a pure-minded person living on spare diet perceives the Supreme Spirit reflected in his own, and by practising concentration of mind in the evening and small hours of the night, he beholds the Supreme Spirit which has no attributes, in the light of his heart, shining like a dazzling lamp, and thus he attains salvation.  Avarice and anger must be subdued by all means, for this act constitutes the most sacred virtue that people can practise and is considered to be the means by which men can cross over to the other side of this sea of affliction and trouble.  A man must preserve his righteousness from being overcome by the evil consequences of anger, his virtues from the effects of pride, his learning from the effects of vanity, and his own spirit from illusion.  Leniency is the best of virtues, and forbearance is the best of powers, the knowledge of our spiritual nature is the best of all knowledge, and truthfulness is the best of all religious obligations.  The telling of truth is good, and the knowledge of truth may also be good, but what conduces to the greatest good of all creatures, is known as the highest truth.