Every man takes the limits of his own field of vision for the limits of the world.
Arthur Schopenhauer
I know what I have given you. I do not know what you have received.
Antonio Porchia
What we do see depends mainly on what we look for.
John Lubbock
Be careful how you interpret the world: It is like that.
Erich Heller
Darkness isn't the opposite of light, it is simply its absence.
Terry Pratchett