The value of unpaid work is often invisible in economic measures, yet it is the backbone of society.
无偿工作的价值在经济衡量中常常不可见，但它却是社会的支柱。
在科学中，重要的不是获得新的事实，而是发现思考它们的新方法。
It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.
Psychology as the behaviorist views it is a purely objective experimental branch of natural science.
我们成功的真正标准不在于开采了多少吨，而在于影响了多少人的生活。
真相并不总是美丽的，但追求真相总是高尚的。
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
The beauty of mathematics lies in its ability to describe the world in a language that is universal.