Yesterday is gone. Tomorrow has not yet come. We have only today. Let us begin.

Life would be tragic if it weren't funny.

People won't have time for you if you are always angry or complaining.

What one does is what counts. Not what one had the intention of doing.

I have noticed even people who claim everything is predestined, and that we can do nothing to change it, look before they cross the road.

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

Be not afraid of growing slowly, be afraid only of standing still.

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 more than just exist.