Science is not only a discipline of reason but also one of romance and passion.
All mankind... being all equal and independent, no one ought to harm another in his life, health, liberty, or possessions.
经济周期不仅仅是围绕某个平滑趋势的波动,而是经济受到根本性冲击的结果。
现在是一个刚刚过去的点。
动力学的方程在用变分法的语言表达时是完全的。
We thought that we had the answers, it was the questions we had wrong.