Men make their own history, but they do not make it as they please; they do not make it under self-selected circumstances, but under circumstances existing already, given and transmitted from the past.
人们自己创造自己的历史，但是他们并不是随心所欲地创造，并不是在他们自己选定的条件下创造，而是在直接碰到的、既定的、从过去承继下来的条件下创造。
The double helix structure of DNA is one of the most beautiful and elegant structures in all of science.
贪婪读书，终生学习，保持好奇，日日增慧。
开玩笑是件严肃的事情。
Life is short, and it's up to you to make it sweet.
The greatest mistake you can make in life is to be continually fearing you will make one.