We are thus facing the following strange situation. While all building stones for the [modern scientific] world-picture are furnished by the senses qua organs of the mind, while the world-picture itself is and remains for everyone a construct of his mind and apart from it has no demonstrable existence, the mind itself remains a stranger in this picture, it has no place in it, it can nowhere be found in it.
Schrodinger, E., 1956. What is Life: & other Scientific Essays, Garden City, NJ: Doubleday Anchor Book. p.216. (pdf copy)