Zhu Xi (1130-1200)
Zhu Xi or Chu Hsi (Chinese: 朱熹, October 18, 1130, Youxi, Fujian Province, China – April 23, 1200, China) was a Song Dynasty Confucian scholar who became the leading figure of the School of Principle and the most influential rationalist Neo-Confucian in China. His contribution to Chinese philosophy include his assigning special significance to the Analects of Confucius, the Mencius, the Great Learning, and the Doctrine of the Mean (the Four Books), his emphasis on the investigation of things (gewu), and the synthesis of all fundamental Confucian concepts formed the basis of Chinese bureaucracy and government for over 700 years.
Quotes·Quotations by Zhu Xi
Time
¶ 少年易老学难成，一寸光阴不可轻。
The young become old soon. It takes a lot of time to learn something. We must not waste any time.
http://en.wikipedia.org/wiki/Zhu_Xi