物理定律在宇宙中任何地方都是相同的。
事实是每个人都相信的简单陈述。它是无辜的,除非被证明有罪。假设是没有人愿意相信的新颖建议。它是有罪的,直到被证明有效。
One of the advantages of being old is that you can speak your mind without worrying about the consequences.
I'm not afraid to fail, I'm afraid of not trying.