It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness, it was the spring of hope, it was the winter of despair, we had everything before us, we had nothing before us, we were all going direct to Heaven, we were all doing direct the other way.
对认可的渴望，灵魂中的激情部分，不能仅通过经济活动来满足。
我学得越多，就越意识到自己不知道的还有多少。
Every experiment is a step towards understanding the complex mechanisms of life.