The greatest glory in living lies not in never falling, but in rising every time we fall.

The secret of change is to focus all of your energy, not on fighting the old, but on building the new.

Think good, and good follows. Think evil, and evil follows. You are what you think all day long.

Turn and face the strange.

You never change things by fighting the existing reality. To change something, build a new model that makes the existing model obsolete.

When education and resources are available to all without a price tag, there will be no limit to the human potential.

Everyone thinks of changing the world, but no one thinks of changing himself.

Those who cannot change their minds cannot change anything.

No matter what people tell you, words and ideas can change the world.