This is the reason why all attempts to obtain a deeper knowledge of the foundations of physics seem doomed to me unless the basic concepts are in accordance with general relativity from the beginning. This situation makes it difficult to use our empirical knowledge, however comprehensive, in looking for the fundamental concepts and relations of physics, and it forces us to apply free speculation to a much greater extent than is presently assumed by most physicists.

Clarity about the aims and problems of socialism is of greatest significance in our age of transition. Since, under present circumstances, free and unhindered …

I do not see any reason to assume that the heuristic significance of the principle of general relativity is restricted to gravitation and that the rest of phys…

Nevertheless, it is necessary to remember that a planned economy is not yet socialism. A planned economy as such may be accompanied by the complete enslavement…

Physics has entered a remarkable era. Ideas that were once the realm of science fiction are now entering our theoretical - and maybe even experimental - grasp.…

The idealistic tinge in my conception of the physical world arose out of mathematical researches on the relativity theory. In so far as I had any earlier philo…

It has often been said, and certainly not without justification, that the man of science is a poor philosopher. Why then should it not be the right thing for t…