Do not make meditation a complicated affair; it is really very simple and because it is simple it is very subtle. Its subtlety will escape the mind if the mind approaches it with all kinds of fanciful and romantic ideas. Meditation, really, is a penetration into the unknown, and so the known, the memory, the experience, the knowledge which it has acquired during the day, or during a thousand days, must end. For it is only a free mind that can penetrate into the very heart of the immeasurable. So meditation is both the penetration and ending of the yesterday.
— Jiddu Krishnamurti, Meditations by Jiddu Krishnamurti, Evelyne Blau, editor