To study the Buddha Way is to study the self. To study the self is to forget the self. To forget the self is to be actualized by myriad things. When actualized by myriad things, your body and mind as well as the bodies and minds of others drop away. No trace of enlightenment remains, and this no-trace continues endlessly.
— Eihei Dōgen
The school of Soto Zen is one of the two remaining major sects of Zen Buddhism which originated in Japan.
Zen originated in China as Chan, and it was brought to Japan by a man who traveled to China to study and practice Zen. His name was Eihei Dōgen (or Eihei Dougen). He not only initiated teaching Zen in Japan but had also written about it at length and established the first and presently oldest Zen monastery in Japan, Eiheiji.
Here is a list of websites that reference information on the Buddhist school of Soto Zen.