Walls define space, but openings connect it to the world.
解释:第一次击鼓能振作士兵们的勇气,第二次击鼓可以使士兵们的勇气低落,第三次击鼓士兵们的勇气就消失了。
解释:想要变得刚强,必定先要保持柔和;想要变得强大,一定先要保持弱小。
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.
Mathematics is the music of reason.