The only way to be free is to constantly challenge authority and convention.

人生之要事在于确立伟大的目标与实现这目标的决心。

Sustainable development requires balancing economic growth with environmental protection.

Communicate everything you possibly can to your partners. The more they know, the more they'll understand. The more they understand, the more they'll care. Once they care, there's no stopping them.

Life in the state of nature is solitary， poor， nasty， brutish， and short.

只热爱实践而无理论的人，就像没有舵和罗盘的水手，永远不知道他可能漂流到哪里。