心理过程是在生存斗争中的手段。
Mental processes are means to ends in the struggle for existence.
第一个围起一块土地,说'这是我的',并找到那些愚蠢到相信他的人,那个人就是真正的建立了文明社会的人。
A legal system is a system of rules which are valid according to the system's own criteria of validity.