Though things change, the future's still inside of me.

I don't know how to change the world, but I know if I keep talking about how dirty it is out here, somebody is going to clean it up.

You gotta make a change. You see the old way wasn't working so it's on us, to do what we gotta do to survive.

I'm one of those people that think Thomas Edison and the light bulb changed the world more than Karl Marx ever did.

To improve is to change; to be perfect is to change often.

The only way a man can remain consistent amid changing circumstances is to change with them while preserving the same dominating purpose.