"I'd had people say, 'You'll enjoy being famous for a week, and you'll never enjoy it again'. But I don't think I had that week. I may have been working and missed that moment."

"I believe a solid, really strong middle-class is the key to making the country in the best way."

"The thing that I like about Germany is that Germans are so much like us. It's not like going to some other countries, where the differences are overwhelming and you walk around in a fog. Germans are so similar to Americans."

"Fame is really strange. One day you're not famous, and then the next day you are, and the odd thing is that you know intellectually that nothing in the world is different. What mattered to you yesterday are the same things that matter today, and the rules all still apply - yet everyone looks at you differently."

"Work alone is noble."

"He who inspires courage in a single soul has led a monumental campaign. Reflect upon this whenever doubt clouds your horizon — an essential principle for the reflective life."

"The belief in a supernatural source of evil is not necessary; men alone are quite capable of every wickedness."

"Stand firm when justice demands it, even if you stand entirely alone."