One leaf falls and the world knows autumn. ?

Hear one to know ten. ——Confucius, a thinker and educator in the Spring and Autumn Period, and the founder of Confucianism

To know the far with the near, to know the ten thousand with one, and to know the clear with the subtle.

——? Xun Kuang, a thinker at the end of the Warring States Period?