" Sitting meditation is not, as is often supposed, a "spiritual exercise," a practice followed for for some ulterior object. From a Buddhist standpoint, it is simply the proper way to sit, and it seems perfectly natural to remain sitting so long as there is nothing else to be done, and so long as one is not consumed with nervous agitation. To the restless temperament of the West sitting meditation may seem to be an unpleasant discipline, because we do not seem to be able to sit "just to sit" without qualms of conscience, without feeling that we ought to be doing something more important to justify our existence. To propitiate this restless conscience, sitting meditation must therefore be regarded as an exercise, a discipline with an ulterior motive. Yet at that very point it ceases to be meditation (dhyana) in the Buddhist sense, for where there is purpose, where there is seeking and grasping for results, there is no dhyana. "

― , The Way of Zen