我不相信后悔，我相信从中吸取教训。
学习计量经济学的最佳方法是通过实践——处理真实的数据和真实的问题。
弦理论提供了一个框架，使得量子力学和广义相对论能够和谐共存。
People work better when they know what the goal is and why.It is important that people look forward to coming to work in the morning and enjoy working.
Success is not about being the best, but about being better than you were yesterday.