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。

"A man's memory might have only a hundred clear days in it and he has lived thousands."

Innovation is not just about creating something new; it's about improving what already exists to make life better for our customers.

解释：能吞下船的大鱼，不会在细浅的溪水里遨游；在天空高飞的鸿鹄，不会在肮脏的水池栖息。