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

He is deeply interested in the doctrines of Jainism.

This ancient document details how Christians lived in Japan.

Old Church Slavonic is the first language written by the Slavs.

Old Church Slavonic is the oldest recorded language of the Slavic group.

He thought he was smart, but he remembered the proverb 'a fool may give a wise man council', and understood the importance of listening to others' opinions.

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

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.