"The past is always tense, the future perfect."
在科学中,重要的不是获得新的事实,而是发现新的思考方式。
科学的遗产是人类的进步。
News is what somebody somewhere wants to suppress; all the rest is advertising.
When I look at the world I'm pessimistic, but when I look at people I am optimistic.
我们智慧的最大证明是我们能够察觉自己的局限。