If you understand, all are one and the same;
If you do not understand, there are thousands of differences and distinctions.
If you do not understand, all are one and the same;
If you understand, there are thousands of differences and distinctions.

Wumen Huikai (1183 CE-1260 CE), Wumen Huikai was a Chinese Chán (Japanese: Zen) master during China‘s Song period. He is most famous for having compiled and commentated the 48-koan collection The Gateless Barrier.