Just read this on the Guardian letters page and rather liked it.
The fundamental philosophy of the right is: "It's a tough world out there and you've got to look after your own.". That of the left is, or should be: "It's a tough world out there and we've got to look after each other."
If you stay at Pepsi, five years from now all you'll have accomplished is selling a lot more sugar water to kids. If you come to Apple you can change the world."