I'm the kind of guy that'll make you wanna change your life.

I don’t regret anything I’ve ever done in my life, because it made me who I am today.

The fundamental defect of fathers is that they want their children to be a credit to them.

The use of a program to prove the 4-color theorem will not change mathematics - it merely demonstrates that the theorem, a challenge for a century, is probably not important to mathematics.