Shunryu Suzuki

“So when you practice zazen, there is no idea of time or space. You may say, “We started sitting at a quarter to six in this room.” Thus you have some idea of time (a quarter to six), and some idea of space (in this room). Actually what you are doing, however, is just sitting and being aware of the universal activity. That is all. This moment the swinging door is opening in one direction, and the next moment the swinging door will be opening in the opposite direction. Moment after moment each one of us repeats this activity. Here there is no idea of time or space. Time and space are one. You may say, “I must do something this afternoon,” but actually there is no “this afternoon.” We do things one after the other. That is all.”(Zen Mind, Beginner’s Mind)