The study of the mind must be free from all preconceived notions.
社会系统是个人之间以及群体之间关系的系统。
The truth is not always the most effective weapon. Sometimes, a well-crafted lie can save more lives than the truth ever could.
The world won't remember what you say, but it will never forget what you do.
国家是人类社会中最重要的机构,因为它是唯一可以合法使用武力来维持秩序的机构。
We should weep for men at their birth, not at their death.