For cruelty to animals, vegetarianism is the great thing to get rid of that. For the planet, to prevent depleting the water and the land and everything, it's a great idea. And I think it's a great thing for your health, and doctors nowadays agree with that. There are plenty of great books and organizations, so no matter where you are, there is someone to help you. That's your first step, and I think your second step is just look in the supermarket for good vegetarian food, and I think it's so much more readily available now.

Sir Paul McCartney and PETA VP Dan Mathews Reflect on Two Decades of Activism (April 2005)