Well I do believe that's a very poignant song. I can't really say who did write what so it's hard to see it as a 100% McVie song when Billy was involved so much in it (in fact he sings the lead vocal with Chris). I do think it's an extremely sincere and beautiful pop song, very moving. And of course one of my favorites on that very underrated album that Behind The Mask is.
Song of the moment - Stand Back