The only way to discover the limits of the possible is to go beyond them into the impossible.
我们有责任利用科学改善生活,而不仅仅是追求利润。
事实上,今天的美国女性比以往任何时候都拥有更多的自由和机会。
There is danger from all men. The only maxim of a free government ought to be to trust no man living with power to endanger the public liberty.