Sustainability isn't a cost center; it's the greatest untapped profit pool of our generation.
Literature is the most powerful antidote to dogma.
数学不是观赏性运动,你必须参与其中才能理解。
发愤研究学问,常常忘记吃饭,一旦有所收获便又高兴地忘记了忧愁,连自己的渐趋衰老也没有感觉到。