Paul McCartney's divorce from Heather Mills has taught him to be patient

Beatles legend Sir Paul McCartney has revealed he has learned to be patient during his bitter divorce battle with estranged wife Heather Mills.

The 65-year-old 'Mull of Kintyre' singer, looking back on a "quite exciting" year, was asked what he had learnt.

McCartney quipped: "F**k all. Algebra? B Minor? Patience, perhaps?

"Obviously the low point was the whole divorce thing.

"That situation isn't madly great. But there you go. Patience is required. It's happening and I'm working through the process."

The singer, who, as we all know, is embroiled in a bitter divorce battle with Heather Mills - said the stressful break-up and legal woes were unlikely to feature in any of his songs.

He added to Word Magazine: "I tend to do hopeful songs in order to counteract the angst. I'm not so good at angst-ridden songs. My natural optimism tends to take over."