“Seven-syllable quatrain“

Ryōkan (1758–1831) was a Sōtō Zen monk during the late Edo period.
He is also known as a poet and calligrapher. Born in Izumozaki, Echigo Province, his childhood name was Eizō, and he later adopted the name Taigu
Ryōkan ordained at a young age and trained under Tainin Kokusen at Entsu-ji Temple in Tamashima, Bitchū Province. After traveling across the country on a pilgrimage, he returned to his hometown around 1793 and began a reclusive life at Gōgōan Hermitage.
Living in simplicity and poverty, Ryōkan composed many poems inspired by his interactions with nature and children. Through his calligraphy, he embodied the spirit of Zen, earning widespread acclaim that continues to this day.