Karen Blixen said this quote

Dr Sass…maintained that in paradise, until the time of the fall, the whole world was flat, the back-curtain of the Lord, and that it was the devil who invented a third dimension. Thus are the words ‘straight’, ‘square’, and ‘flat’ the words of noblemen, but the apple was an orb, and the sin of our first parents, the attempt at getting around God. I myself much prefer the art of painting to sculpture