The mind is subject to unsteadiness because of desires. Desires are roused by the impressions received by the senses from outside. the only way to avoid these external impressions is to turn the senses inwards. To effect this change in the use of the senses, the power of discrimination derived from the intellect should be employed. The intellect should be used to determine what impressions should be kept out and which should be let in. The intellect should determine what kind of company we should keep, what kind of food we should eat and what are desirable practices and what are undesirable. It is by the right use of their intellectual judgment that the ancient sages achieved spiritual eminence.
(Sanathana Sarathi, November 1997, pg 296)
