In this limitless world, our throat is like a swinging door. The air comes in and goes out like someone passing through a swinging door. If you think, 'I breathe', the 'I' is extra. There is no you to say 'I'. What we call 'I' is just a swinging door which moves when we inhale and when we exhale. It just moves; that is all. When your mind is pure and calm enough to follow this movement, there is nothing: no 'I', no world, no mind nor body; just a swinging door. - Shunryu Suzuki (Beginner's Mind)