地理学的研究是研究人与环境之间的关系。
"The past is not dead; it is not even past."
The best songs come from pain.
The quality of a country's institutions is the single most important determinant of its long-term economic performance.
可持续性不是一种选择,而是我们对下一代的责任。
做出伟大工作的唯一方法就是热爱你所做的事。