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

This ancient document details how Christians lived in Japan.

His long talk is just like 'a hundred days of sermonizing without a fart.'

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

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

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