Every mathematical problem has a solution; the challenge is finding it.
Any change, even a change for the better, is always accompanied by drawbacks and discomforts.
I've learned that you can't control everything, and sometimes you just have to let go.
在原子和电子的世界中,经典物理学的定律不再有效,我们必须转向量子力学以获得正确的描述。
人情像纸一样十分脆薄,世界上的事如棋局一样变化万千。