Shinran Shōnin was a Japanese Buddhist monk who lived from 1173 to 1262. He is best known as the founder of the Jōdo Shinshū sect, which emphasizes the importance of faith in Amitābha Buddha for achieving enlightenment. Shinran's teachings focused on the concept of "other-power," meaning that salvation comes through reliance on the compassion of Amitābha rather than through individual effort. Shinran's writings, particularly the Kyōgyōshinshō, outline his beliefs and have had a significant impact on Japanese Buddhism. He encouraged followers to embrace their imperfections and trust in the grace of Amitābha. His legacy continues to influence millions of practitioners today.