"If your mind has space, then in that space there is silence—and from that silence everything else comes, for then you can listen, you can pay attention without resistance. That is why it is very important to have space in the mind. If the mind is not overcrowded, not ceaselessly occupied, then it can listen to that dog barking, to the sound of the train crossing a distant bridge, and also be fully aware of what is being said by a person talking here. Then the mind is a living thing, it is not dead.”
Ulrich, David. Zen Camera: Creative Awakening with a Daily Practice in Photography (p. 71). Potter/Ten Speed/Harmony/Rodale. Kindle Edition.