Reality is whatever refuses to go away when I stop believing in it. – Philip K. Dick

What happens to the wide-eyed observer when the window between reality and unreality breaks and the glass begins to fly? – Author Unknown

Nothing exists except atoms and empty space; everything else is opinion. – Democritus

There is an objective reality out there, but we view it through the spectacles of our beliefs, attitudes, and values. – David G. Myers, Social Psychology