The philosophers have only interpreted the world, in various ways: the point, however, is to change it.

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

Do you want to spend the rest of your life selling sugared water or do you want a chance to change the world?

I alone cannot change the world, but I can cast a stone across the waters to create many ripples.

You must be the change you wish to see in the world.

Our greatest ability as humans is not to change the world; but to change ourselves.