The great path has no gates,
Thousands of roads enter it.
When one passes through this gateless gate
He walks freely between heaven and earth  

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.