Everyone is going throgh changes,
No-one knows what's going on,
Everybody changes places
But the world still carries on.

Now, love must always change to sorrow,
And everyone must play the game,
It's here today and gone tomorrow
But the world goes on on the same.

Sung to the tune of What A Friend We Have In Jesus, so it sounds cheerful and consoling - until you listen to the lyrics. Something similar goes on in the title song, which opens with the marvellous line

If you have a friend on whom you think you can rely
You are a lucky man

(Not 'know'!) And maybe it's true - maybe that is enough. It's a very Zen film, or so I thought when I saw it at the age of 16. "This is this", as the guy says in the Deer Hunter - this is this, and what are you going to do about it? Smile!