Mencius
Mencius studied humans the way Lorenz studied other animals. Mencius was an ethologist too, but in the language of ancient China he was regarded as a "master," that is, a teacher. He was a Confucian, and Confucianism is sometimes called a religion. However, Mencius does not quote religious texts and try to get people to act the way those books say to act. He also does not name fundamental truths or axioms and try to figure out how people ought to act. So he is not like most people that we regard as either religious leaders or philosophers.