我们这个时代最重要的政治挑战是创建强大、有效和负责任的国家。
The most important political challenge of our time is to create strong, effective, and accountable states.
The beauty of mathematics lies in its ability to describe the universe in a language that is both precise and universal.
机器学习中的挑战不仅仅是发现数据中的模式，而是发现能够推广到新的、未见过的数据的模式。
The proper study of psychology is the prediction and control of behavior.