What is Zen meditation ?
Zen Master Seung Sahn, the first Korean Zen meditation master to spread Zen Buddhism in the West:
Deep in the mountains, the great temple bell is struck. You hear it reverberating in the morning air, and all thoughts disappear from your mind. There is nothing that is you; there is nothing that is not you. There is only the sound of the bell, filling the whole universe. This is Zen mind.
Springtime comes. You see the flowers blossoming, the butterflies flitting about; you hear the birds singing, you breathe in the warm weather. And your mind is only springtime. It is nothing at all. You visit Niagara and take a boat to the bottom of the falls.