教育的根是苦的，但果实是甜的。

绘画是在纸上思考。

The best moments in our lives are not the passive, receptive, relaxing times... The best moments usually occur if a person's body or mind is stretched to its limits in a voluntary effort to accomplish something difficult and worthwhile.

"Understanding quantum mechanics is not about accepting its strangeness, but about embracing the new logic it presents."

黑色是光的颜色，不是黑暗的颜色。