What we observe is not nature itself, but nature exposed to our method of questioning. – Werner Heisenberg
The violent reaction on the recent development of modern physics can only be understood when one realises that here the foundations of physics have started moving and that this motion has caused the feeling that the ground would be cut from science. – Werner Heisenberg
Natural science, does not simply describe and explain nature it is part of the interplay between nature and ourselves. – Werner Heisenberg
Our ideas are the offspring of our senses; we are not more able to create the form of a being we have not seen, without retrospect to one we know, than we are able to create a new sense. He whose fancy has conceived an idea of the most beautiful form must have composed it from actual existence. – Henry Fuseli