If you want to make the world a better place, take a look at yourself, and make a change.

If you want to change the world, start with yourself.

As a man changes his own nature, so does the attitude of the world change towards him.

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

What I've learned is not to change who you are, because eventually you're going to run out of new things to become.

We always overestimate the change that will occur in the next two years and underestimate the change that will occur in the next ten. Don't let yourself be lulled into inaction.