Democracy... while it lasts is more bloody than either aristocracy or monarchy. Remember, democracy never lasts long. It soon wastes, exhausts, and murders itself. There is never a democracy that did not commit suicide.

告别昨日是如此艰难

心灵如同冰山，浮出水面的仅占七分之一。

我们对宇宙了解得越多，就越意识到我们还有多少尚未发现的东西。