“I believe that nothing can be more abstract, more unreal, than what we actually see. We know that all that we can see of the objective world, as human beings, never really exists as we see and understand it. Matter exists, of course, but has no intrinsic meaning of its own, such as the meanings that we attach to it. Only we can know that a cup is a cup, that a tree is a tree.” – Giorgio Morandi (Italian painter, 1890-1964)
Natura Morta, oil on canvas, 1956.
Unrelated: what we don’t see…
“‘Why does God not show Himself?’ – ‘Are you worthy?’ – ‘Yes.’ – ‘You are very presumptuous, and thus unworthy.’ – ‘No.’ – ‘Then you are just unworthy.'” – attributed to Pascal