Lord Rees in lucid form at 80 gives early hope of a benign and mellowing natural intelligence before he bayonet's your complacency and charges through the rent with trademark efficiency ...and a winning smile. I've considered dark matter a hundred times and never once imagined it his way. I stopped the frame and sat back for ten seconds thinking about what was in my room. He did it again.,(reply>), @Barbara Cleverly Thank you Barbara. The credit goes to the man, I think. He's still such an inspirational fellow and long may it last...,(reply>), Great comment! You catch exactly his style.