Success is not accidental, it requires persistence and hard work.

你活着，你学习。你爱着，你学习。你哭泣，你学习。你失去，你学习。你流血，你学习。你尖叫，你学习。

There are dark shadows on the earth, but its lights are stronger in the contrast.

A law of nature， lex naturalis， is a precept or general rule found out by reason， by which a man is forbidden to do that which is destructive of his life or takes away the means of preserving the same.

我早就得到了结果，但还不知道如何得到它们。