In teaching history, there should be extensive discussion of personalities who benefited mankind through independence of character and judgement.
最终,我们记住的不是敌人的话语,而是朋友的沉默。
The most profound ideas in mathematics often come from asking the simplest questions.
The test of our progress is not whether we add more to the abundance of those who have much; it is whether we provide enough for those who have too little.