Poetry about cognition

Reading in winter night, Xianzi said

Dynasty: Song Dynasty

Author: Lu You

The ancients learned nothing, and it takes time to grow old.

What you get on paper is so shallow that you never know what you have to do.

Cylinder wall

Dynasty: Song Dynasty

Author: Su Shi

Looking at Lushan Mountain from the front and side of peaks and valleys, from far, near, high and low places, Lushan Mountain presents various faces.

I can't recognize the true face of Lushan Mountain because I am there.