Collaboration is essential in science—no one does it alone.
We have not yet learned to think, but we are learning.
万物起源的奥秘对我们来说是无法解决的;而我必须满足于做一个不可知论者。
筹划洋人的事情一定要先了解洋人的情况,要了解洋人的情况一定知道洋人的情况。