Intelligence is the ability to adapt to change.

Action is the foundational key to all success.

Life would be tragic if it weren't funny.

Happiness is not something ready made. It comes from your own actions.

I have been impressed with the urgency of doing. Knowing is not enough, we must apply. Being willing is not enough, we must do.

My goal is simple. It is a complete understanding of the universe, why it is as it is and why it exists at all.

Do what you can, with what you have, where you are.

The man who does not read has no advantage over the man who cannot read.

Either write something worth reading or do something worth writing.