I heard these guys on NPR this weekend. Paul Simon said how he was in his 20s when he wrote Old Friends, and that he never expected to be singing it on stage in his 60s (the characters in the song are 70).

I love that song. It is a song of true friendship.

In looking for the lyrics for Old Friends I wasn't able to find the little bit they say at the end on any of the sites I ran across. Below I have recorded it for postarity (or whatever):

Time it was
and what a time it was
it was
a time of inocence
a time of confidences.

Long ago it must be
I have a photograph
preserve your memory
its all that's left you.