Although we have no actual written communications from the world of emptiness, we have some hints or suggestions about what is going on in that world, and that is, you might say, enlightenment. When you see plum blossoms or hear the sound of a small stone hitting bamboo, that is a letter from the world of emptiness.
Shunryu SuzukiPeople say that practicing Zen is difficult, but there is a misunderstanding as to why. It is not difficult because it is hard to sit in the cross- legged position, or to attain enlightenment. It is difficult because it is hard to keep our mind pure and our practice pure in its fundamental sense.
Shunryu Suzuki