I like progress but I hate change.

I think if you do something and it turns out pretty good, then you should go do something else wonderful, not dwell on it for too long. Just figure out what's next.

Progress consists only in the greater clarification of answers to the basic questions of life.

All progression is in the relative world.

If African farmers can use improved seeds and better practices to grow more crops and get them to market, then millions of families can earn themselves a better living and a better life.

The people who are crazy enough to think they can change the world are the ones who do.