The United States, in their expansive capacity, are capable of containing within their limits the whole population of the earth.

理论物理学对物理学家而言，就像望远镜对天文学家一样重要。

The goal of the future is full unemployment, so we can play.

如果你确信自己走在正确的道路上，并且内心深知这一点，那么无论别人说什么，都无法让你动摇。

发现DNA结构就像解开一个非常复杂的谜题。

The greatest enemy of a trader is hope.