我们需要确保技术为人类服务，而不是反过来。
Leadership in mining means making tough decisions for long-term benefits.
To sing is to pray twice.
变得更幸福既需要意愿也需要正确的方法。
The ideal of behaviorism is to eliminate coercion: to apply controls by changing the environment in such a way as to reinforce the kind of behavior that benefits everyone.
A mathematician's best work often comes from seeing connections where others see none.
