让儿童参与工作,能增强他们对生活环境的责任感。
International politics is a brutal and dangerous business, and it is likely to remain that way.
不要贪婪,也不要孤立。
地理学是关于地方的科学,而不是关于人的科学。
Innovation is not from nothing to something, but from something to better.
True leadership is not about being in charge, but about taking care of those in your charge.
Innovation is born at the intersection of curiosity and persistence.
The most exciting applications of drones haven't even been invented yet.