The more we learn about the true nature of animals, the more we realize how much we have in common with them.

The most important thing about a theory is that it explains the facts.

向更清洁能源的过渡是不可避免的，我们必须站在这一变革的最前沿。

好的计量经济学就像好的木工——关键在于为工作使用正确的工具。