Goethe already stated that one could only see what one knows. This was further substantiated by the physicist Helmholtz around 1850, who was able to proof that the human eye could neither see right angles nor parallel lines. It is therefore somewhat confusing that we permanently believe to see right angles and parallel lines. These images are, in fact, constructions of our brain. This, however, partially contradicts the above Brinkmann quote because according to Helmholtz’s findings the eyes would indeed be the mirror of what we see, but we see images that we are not capable of seeing. In relation to the above quote, the consideration remains as to whether the eyes themselves express something totally different towards the outside than what they are shown.
Hence, nothing simply reflects that which is happening.