Here it is:
If you'd like to explore some other versions, here you are. First up - Kenny Loggins:
Here's Sarah McLachlan's version:
And Willie Nelson's (next to Kermit, I like Willie's):
Here's Judy Collins' version:
Here's Paul Williams. He wrote the original song. He gets all chatty before he sings it, but it's worth hearing if only to listen to the guy that wrote it.
And finally this sweet little version by Weezer and Hayley Williams
It's just a sweet little love song about yearning for peace and love and connectedness. Seems a lot of people like that idea.