The mind grows by exercise, not by passive absorption.
The greatest glory in living lies not in never falling, but in rising every time we fall.
The future of mining lies in intelligent and green technologies.
我认为我和吉姆值得称赞的主要原因是...选择了正确的问题并坚持研究它。
The sociological imagination enables us to grasp history and biography and the relations between the two within society.