Liberal democracy may constitute the "end point of mankind's ideological evolution" and the "final form of human government."
永远不要停止学习；当你认为自己无所不知的那天，就是你开始落后的那天。
切勿对已经敞开心胸的人闭上双唇。
Research is a journey where the destination is unknown, but the pursuit is everything.
投资更清洁的煤炭技术是对能源未来的投资。
The only possible way to live is to accept each minute as an unrepeatable miracle.