易涨易退山溪水，易反易覆小人心。
小人反复无常，不可深交。
Forests are the lungs of the earth, and we must protect them with the same urgency as our own health.
The beauty of theoretical physics lies in its ability to describe the universe with a few simple equations, revealing the underlying simplicity beneath the apparent complexity.
Patience is the key to achieving great endeavors.
仁德之人将天地万物视为一个整体。