Please experiment with what I have said about discipline, self-discipline. Don't reject it, don't say you must have self-discipline, because there will be chaos in the world - as if there were not already chaos; and again, don't merely accept what I say, agreeing that it is true. I am telling you something with which I have experimented and which I have found to be true. Psychologically I think it is true, because self-discipline implies a mind that is tethered to a particular thought or belief or ideal, a mind that is held by a condition; and as an animal that is tethered to a post can only wander within the distance of its rope, so does the mind which is tethered to a belief, which is perverted through self-discipline, wander only within the limitation of that condition. Therefore such a mind is not mind at all, it is incapable of thought. It may be capable of adjustment between the limitations of the post and the farthest point of its reach; but such a mind, such a heart cannot really think and feel.
3rd Public Talk 18th June, 1934