Success is measured not just by profit, but by the positive impact we create.

I was looking for the key for years, but the door was always open.

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。

请勇往直前，一路勇往直前，然后用推特（Twitter ）大肆宣扬你努力的成果。搞不好你会名满天下。

在资本主义社会中，经济进步意味着动荡。