种一棵树最好的时间是20年前,第二好的时间是现在。
量子力学不仅是一种理论,而且是一种新的思维方式。
What's terrible is to pretend that second-rate is first-rate. To pretend that you don't need love when you do; or you like your work when you know quite well you're capable of better.
生物学的美丽在于它能够通过简单的原理解释生命的多样性。