[2016-06-02 13:00:00] In the age of social media, we’ve managed to turn the word “friend” into a verb. The truth, though, is that we’ve been friending each other since the beginning of time. This hour, we’ll talk about why we seek out friends and the purposes they serve in our lives with Princeton humanities professor Alexander Nehamas. He writes about the topic in “On Friendship” (Basic Books).