Today I will do what others won't, so tomorrow I can do what others can't.

The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.

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

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.

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.

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

Do more than just exist.