Now the question is, how does one unlearn? Learning is forming a knot in the mind. Whatever one learns from experience or from a person, one makes a knot of it in the mind; and there are as many knots found as there are things one has learned. Unlearning is unravelling the knot; and it is as hard to unlearn as it is to untie a knot. How much effort it requires, how much patience it requires, to unravel when one has made a knot and pulled it tight from both sides!