世界上最好和最美丽的东西是看不见甚至摸不到的——它们必须用心去感受。
Science is not only a discipline of reason but also one of romance and passion.
历史学家必须兼具诗人和哲学家的特质。
We must mine coal responsibly today so that our children inherit both energy security and a healthy environment.
如果你借给别人 20 美元,而他为了不还钱选择不再见你,那你们的关系就只值 20 美元。