月光就是雕塑。

A mind conscious of its purity is attached to nothing， neither to the body nor to the soul.

If you're not stubborn， you'll give up on experiments too soon. And if you're not flexible， you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.

The essence of mathematics lies in its freedom.

一个真正的决定是通过你采取的新行动来衡量的。如果没有行动，你就没有真正做出决定。