Soga Ryōjin (曽我 量深, August 5, 1875 – June 20, 1971) was a Japanese Buddhist philosopher and priest of the Ōtani-ha of Jōdo Shinshū Buddhism.
[1] Soga returned to study at Ōtani University and became a disciple of Kiyozawa Manshi (1863 – 1903), and a member of Ōtani-ha.
[1] Soga Ryōjin developed a subjective and personal approach to Jōdo Shinshū studies, building on the thought of Kiyozawa Manshi, which he summarised in the words; "We do not believe in Buddha or God because they actually exist; they exist because we believe in them."
Soga's writing on the topic in his book Nyorai hyōgen no hanchū to shiteno sanjinkan, published in 1928, brought him into strong conflict with his denomination.
[1] Soga was always extremely careful to differentiate the Jōdo Shinshū perspective from the "Pure Land as mind alone" doctrine found in some Pure Land and Zen schools: After leaving Ōtani, Soga founded the Koho Gakuen in Kyoto with his close friend, the scholar Kaneko Daiei (1881 – 1976).