可持续性不是一个选择;它是我们对后代的责任。
Sustainability isn't an option; it's a responsibility we owe to future generations.
不要因为别人辜负我就打消行善济人的念头,想想我当初帮助别人时,只不过是在同情心驱使下做出的举动,并未想着要别人报答。至于说遇上了忘恩负义的人,不必与之计较,付之一笑罢了。
Mathematics advances not by the efforts of individuals alone but through the collective work of generations.