Paul McCartney is glad wife Heather forced him to quit smoking marijuana - because he makes more sense since he's stopped taking the drug.
The rocker took up the habit after sharing a joint with Bob Dyaln in the early 1960s, and only recently weaned himself off it when new wife Heather Mills protested.
And he says: "I've talked to people who've said: 'You're conversation is so clear these days. It all used to be a little hazy.' And you thought you were having a good time.
"I have quite a liberal view (on drugs) but I find that I prefer to be straight."