在数学中，你不理解事物。你只是习惯它们。

The best science fiction is not about the future; it's about the present.

The Moving Finger writes; and, having writ, Moves on: nor all thy Piety nor Wit Shall lure it back to cancel half a Line, Nor all thy Tears wash out a Word of it.

我们必须在能源需求和环境保护之间取得平衡。