50. The mind which is moved and lighted, by the heat and light of the lamp of the intellect; becomes extinct without its physical force, and grows as motionless as a dead body.
51. The nature of the intellect is known to exclude the idea of motion or pulsation from it; and the power which has vibration in it, is called intellection or the mind in the sástras.
52. The breathing (or vibration) of the mind, like the hissing of a snake, is called its imagination (kalpana); but by knowing the intellect as the Ego, it comes to the true knowledge of the inward soul.
53. The intellect which is free from thoughts (chetyas), is the ever lasting Brahma; but being joined with thought, it is styled the imaginative principle or Mind.
54. This power of imagination having assumed a definite form, is termed the mind; which with its volition and options, is situated in the heart of living beings.
55. With its two distinct powers of imagination and volition, it is employed in the acts of discriminating and choosing the agreeable from what is disagreeable to it. (i.e. The imagination and volitive faculties of the mind, supply it with the power of discrimination and option, between what is fit or unfit for or suitable to it).
56. The intellect being seated in the heart with its thoughts and volitions, forgets its spiritual nature, and remains as a dull material substance (i.e. the passivity of the heart as opposed to the activity of the mind).
57. The intellect being thus confined in the hearts of all animals in this world, continues in utter oblivion of its nature; until it is awakened of itself, either by its intuition or instruction of preceptors &c.
58. So it is to be wakened by means of instruction, derived from the sástras and preceptors; as also by the practice of dispassionateness, and subjection of the organs of sense and action.
59. When the minds of living beings, are roused by learning and self-control; they tend towards the knowledge of the Great Brahma, or else they rove at random about the wide world.