The essence of Zen Buddhism is that all human beings are Buddha, and beings by nature are Buddhas, as ice by nature is water.
ˈZen Buddhist school of Japan is the practice of sitting meditation leading to gradual enlightenment. Sōtō Zen or the Sōtō school is the largest of the three traditional sects of Zen in Japanese Buddhism. It is the Japanese line of the Chinese Cáodòng school, which was founded during the Tang dynasty by Dòngshān Liánjiè. It emphasizes Shikantaza, meditation with no objects, anchors, or content.