Meditation implies a quality of mind that can completely attend, therefore, a mind that can be completely still. The mind is always chattering, always talking, either to itself, within itself or to somebody, always in movement. How can a mind which is everlastingly chattering perceive anything? Only a mind that is completely attentive has the total energy to observe, because you need tremendous energy to observe. The religious monks and others say that you cannot waste energy; therefore no sex, if you want to be a saint. And when you become a celibate and have taken vows of celibacy, there is havoc in you, because you are denying the whole biological system and there is a wastage of energy. You are battling, battling, battling. Or you go to the other extreme, indulge, which is another form of wasting energy. Whereas, if you are attentive, it is the greatest form of all summation of energy. It means intensity, passion, and you cannot be passionate if you are wasting. Without any effort the mind can become completely quiet and therefore full of energy without any distortion.
– Krishnamurti, Talks and Dialogues in Sydney 1970