There are two primary choices in life: to accept conditions as they exist, or accept the responsibility for changing them.

Intelligence is the ability to adapt to change.

A life not lived for others is not a life.

A man is but the product of his thoughts. What he thinks he becomes.

View life as a continuous learning experience.

Our prime purpose in this life is to help others. And if you can't help them, at least don't hurt them.

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

Life is a beautiful magnificent thing, even to a jellyfish.

Only a life lived for others is a life worthwhile.