如果你不偶尔失败，说明你不够努力。
If you don’t fail now and again, you’re not trying hard enough.
As to the gods, I have no means of knowing either that they exist or that they do not exist. For many are the obstacles that impede knowledge, both the obscurity of the question and the shortness of human life.
创新不仅仅是创造新事物，也是改进已有的事物。
