The most important lesson I've learned in this business is how to say no. I have said no to a lot of temptations, and I am glad I did. Penélope Cruz
The most important lesson of New Labour is this: Every time we made progress we did it by challenging the conventional wisdom. Ed Miliband
Keeping Germany from acting too German (or at least too Prussian) is an important lesson of history. Jonah Goldberg
I don't mind a good fight. For reasons known only to God, I've had quite a few tough ones in my life. But I learned an important lesson along the way: In the end, it matters less that you can fight. What you fight for is the real test. John McCain
I forgot to shake hands and be friendly. It was an important lesson about leadership. Lee Iacocca
So one important lesson of Vietnam is, the first casualty of an unwise and unjust war are the American troops called on to fight it. Their service should be honored. Paul Begala