A friend is a second self, so that our consciousness of a friend's existence...makes us more fully conscious of our own existence.

A friend is a second self, so that our consciousness of a friend's existence...makes us more fully conscious of our own existence.

朋友是另一个自我，使我们意识到朋友的存在……使我们更充分地意识到自己的存在。

-- Aristotle 亚里士多德