The greatest barrier to someone achieving their potential is their denial of it.

Don't borrow someone else's spectacles to view yourself with.

It ain't the picture and it ain't the camera - it's the operator.

There's no such thing as 'facts of life'. Only standing theories that haven't been disproved as of yet.

What I think we fear is rapid, pronounced, and uncontrollable changes to ourselves, and because of this we have a form of personality inertia - something that resists rapid change.

The greatest obstacle to international understanding is the barrier of language.