Mathematics is the language with which God has written the universe.

I needed a drink, I needed a lot of life insurance, I needed a vacation, I needed a home in the country. What I had was a coat, a hat and a gun.

The best ideas often come from listening to those closest to the problem.

I don't regret the past. It made me who I am today.

"The real voyage of discovery consists not in seeking new landscapes, but in having new eyes."

The best time to plant a tree was twenty years ago. The second best time is now.