Lao Tzu (the Old Sage) is the author of the Tao Te Ching. Unfortunately only few is known about his life.
He lived during the Warrior States in China (about 604-531). Much of his life he would have worked as an archivist at the Chou court. There he would met Confucius and talked about rites. This historical meeting stress the huge difference between Lao Tzu’s philosophy and the Confucian’s one.
Lao Tzu’s is based on the seclusion and the keeping of a low profile while Confucius believed in human transformation through acquiring knowledge and moral education.
The meeting is related by Ssu-ma Ch’ien in his Historical Records. Here we find that Confucius would have been shocked by Lao Tzu’s charisma and would have called him a Dragon! This is the Chinese symbol of the Perfect Man.
Later on Lao Tzu would have left for the West and met Yin His, the guardian of the pass. He would have written the Tao te Ching upon his request.
Nothing more in known about Lao Tzu.
Some said he would have lived about 200 years.