人类心智形成和操纵符号的能力使我们区别于其他动物。
The most profound truths are often the simplest.
The most exciting aspect of catalysis is the endless possibilities it offers for discovery and innovation.
美国农民是我们经济中唯一必须以零售价购买所需一切,以批发价出售所产一切,并支付双向运费的人。
"The past is never dead. It's not even past."
有时候你必须迷失自己,才能找到真正的自己。
To study history is to learn the grammar of time.