5th-century BC religious leaders

Confucius (), born Kong Qiu, was a Chinese philosopher of the Spring and Autumn period who is traditionally considered the paragon of Chinese sages. Much of the shared cultural heritage of the Sinosphere originates in the philosophy and teachings of Confucius. His philosophical teachings, called Confucianism, emphasized personal and governmental morality, harmonious social relationships, righteousness, kindness, sincerity, and a ruler's responsibilities to lead by virtue.

Pythagoras of Samos (;  BC) was an ancient Ionian Greek philosopher, polymath, and the eponymous founder of Pythagoreanism. His political and religious teachings were well known in Magna Graecia and influenced the philosophies of Plato, Aristotle, and, through them, Western philosophy. Modern scholars disagree regarding Pythagoras's education and influences, but most agree that he travelled to Croton in southern Italy around 530 BC, where he founded a school in which initiates were allegedly sworn to secrecy and lived a communal, ascetic lifestyle.