The most important thing in mathematics is to understand the concepts, not just to memorize the formulas.

社会是由某些关系或行为方式联合起来的个体的集合，这些关系或行为方式将他们与那些不进入这些关系或行为方式不同的人区分开来。

The truth about the world, he said, is that anything is possible. Had you not seen it all from birth and thereby bled it of its strangeness it would appear to you for what it is, a hat trick in a medicine show, a fevered dream, a trance bepopulate with chimeras having neither analogue nor precedent, an itinerant carnival, a migratory tentshow whose ultimate destination after many a pitch in many a mudded field is unspeakable and calamitous beyond reckoning.

我们都只是路过，像雪地上的脚印一样留下自己的痕迹。

森林的真正价值不仅在于木材产量，还在于生物多样性和生态系统健康。

写作的行为是一种勇气的行为。

我们正在进入一个生物科学将主导知识领域的时代。