Mere physical sitting is not enough. You have to sit carefully and attentively. Let your body and breathing sit. Let your mind and emotions sit. Let your blood circulation sit. Let everything sit. Then your sitting becomes indestructible, immovable.

Hakuyū Taizan Maezumi (1931 CE-1995 CE), Hakuyū Taizan Maezumi was a Japanese Sōtō Zen Buddhist priest who substantially contributed to development of Zen in the USA. In 1956 he was sent to the United States to serve as a priest for a Japanese-American congregation in Los Angeles. After taking English classes, Maezumi began holding zazen for Western students early in the 1960s, founding the Zen Center of Los Angeles in 1967.