国际政治是一个残酷而无情的舞台,各国不断努力最大化自己的权力和安全。
The more you like yourself, the less you are like anyone else, which makes you unique.
数学的研究是所有智力和精神进步不可或缺的基础。
最大的回报不是经济收益,而是能够以积极的方式影响人们的生活。
History is not the past. It is the method we have evolved of organizing our ignorance of the past.