不是缺乏爱,而是缺乏友谊使婚姻不幸福。
It is not a lack of love,but a lack of friendship that makes unhappy marriages.
我们无权假设任何物理定律存在,或者即使它们至今存在,它们将来也会以类似的方式继续存在。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
The biggest risk is not taking any risk. In a world that's changing really quickly, the only strategy that is guaranteed to fail is not taking risks.