病毒的复杂性提醒我们，关于生物学我们还有很多需要学习。
The complexity of viruses reminds us how much we still have to learn about biology.
Friendship is a matter of time investment.
谷物种植的成功不仅仅以蒲式耳衡量，还要看我们土壤的健康状况。
The only way to get rid of a temptation is to yield to it.
语言是我们拥有的最强大的武器。
Leadership is about making tough decisions today that will benefit future generations.
你可以锁上你的图书馆；但对我的思想自由，你无法设置任何门闩、锁或插销。