Zen asks you to come out of the head and go to the basic source.... It is not that Zen is not aware of the uses of energy in the head, but if all the energy is used in the head, you will never become aware of your eternity.... You will never know as an experience what it is to be one with the whole. When the energy is just at the center, pulsating, when it is not moving anywhere, neither in the head nor in the heart, but it is at the very source from where the heart takes it, the head takes it, pulsating at the very source--that is the very meaning of Zazen. Zazen means just sitting at the very source, not moving anywhere, a tremendous force arises, a transformation of energy into light and love, into greater life, into compassion, into creativity. It can take many forms. But first you have to learn how to be at the source. Then the source will decide where your potential is. You can relax at the source, and it will take you to your very potential.
Osho The Zen Manifesto: Freedom from Oneself Chapter 11