When everyone tries to sell at the same time, liquidity disappears.

除非将某人的行动置于其整个生活背景中看待，否则无法完全理解其行动。

在距离与重量成反比的情况下，物体处于平衡状态。

I’ve always been an optimist and I suppose that is rooted in my belief that the power of creativity and intelligence can make the world a better place.

每一个数学问题都是通向更深入理解世界的窗口。