The regime for him is not one branch of human activity among others it is the fundamental principle or ordering principle that makes all the others even possible.

对他而言,政体并非人类活动的一个分支,而是基本的原则,或说是指导原则,使所有其它学科化作可能,这就是为何。

耶鲁公开课 - 政治哲学导论课程节选

In one sense you could say political philosophy is simply a branch or what we call a subfield of the field of political science. Yes all right.

从一个层面来看，你可以说,政治哲学简单来说，就是一个分支,或说次领域自政治科学,中分离出来，没错。

耶鲁公开课 - 政治哲学导论课程节选