幽默是孩子理解世界的方式。

The whole of life is just like watching a film. Only it's as though you always get in ten minutes after the big picture has started, and no-one will tell you the plot, so you have to work it out all yourself from the clues.

The whole art of teaching is only the art of awakening the natural curiosity of young minds for the purpose of satisfying it afterwards.

The universe is expanding, and the expansion is accelerating.

事物忌讳到达顶点，事情避免极其完美，人则忌讳飞黄腾达。