About Mencius
Mencius, born Meng Ke (孟軻), was a Chinese Confucian philosopher, often described as the Second Sage (亞聖) to reflect his traditional esteem relative to Confucius himself. He was part of Confucius's fourth generation of disciples, inheriting his ideology and developing it further. Living during the Warring States period, he is said to have spent much of his life travelling around the states offering counsel to different rulers. Conversations with these rulers form the basis of the Mencius, which would later be canonised as a Confucian classic.
Biography source:
Wikipedia
