https://zh.wikipedia.org/wiki/%E9%87%8B%E4%B8%80%E8%A1%8C
https://en.wikipedia.org/wiki/Th%C3%ADch_Nh%E1%BA%A5t_H%E1%BA%A1nh
https://en.wikipedia.org/wiki/Plum_Village_Monastery
Silence: The Power of Quiet in a World Full of Noise, HarperOne, 2015 (accessible via scribd)
