“The Basic kind of Zen practice is called zazen (sitting Zen), and in zazen we attain samadhi. In this state the activity of consciousness is stopped and we cease to be aware of time, space, and causation. The mode of existence which thus makes its appearance may at first sight seem to be nothing more than mere being, or existence. However, if you really attain this state you will find it to be a remarkable thing. At the extremity of having denied all, and having nothing left to deny, we reach a state in which absolute silence and stillness reign, bathed in pure, serene light. Buddhists of former times called this state annihilation, or Nirvana. But it is not a vacuum or mere nothingness. ” ~ ‘Zen Training Methods and Philosophy by Katsuki Sekida. Page 29-30.