Natural science wants man to learn, religion wants him to act. - Max Karl Ernst Ludwig Planck

The first and most important quality of all scientific ways of thinking must be the clear distinction between the outer object of observation and the subjective nature of the observer.

Experiment is the only means of knowledge at our disposal. Everything else is poetry, imagination.

I regard consciousness as fundamental. I regard matter as derivative from consciousness. We cannot get behind consciousness. Everything that we talk about, everything that we regard as existing, postulates consciousness.