Socrates had a circle of friends and disciples that he would argue philosophy with.

苏格拉底有一大群朋友和学生,和他讨论哲学

耶鲁公开课 - 死亡课程节选

Trust can only be extended to a fairly small circle of friends and fellow citizens.

信任只能延伸到,一个极小的,朋友圈子及同邦公民。

耶鲁公开课 - 政治哲学导论课程节选