Zoroastrianism is an ancient Persian religion that teaches dualism of good and evil.

He is deeply interested in the doctrines of Jainism.

Jainism is a religion that emphasizes the teachings of non-violence and respect.

Manichaeism was an ancient religion that taught a dualism of light and darkness.

This ancient document details how Christians lived in Japan.

Mahayana Buddhism is a sect of Buddhism that emphasizes compassion and universal salvation.

Theravada Buddhism is a sect of Buddhism and is mainly spread in South Asia.

He understands the meaning of the proverb 'Teaching is half learning', which means that teaching leads to one's own learning.