## Paul Dirac

- [The Evolution of the Physicist's Picture of Nature](https://blogs.scientificamerican.com/guest-blog/the-evolution-of-the-physicists-picture-of-nature/)
Paul Dirac from the May 1963 issue of Scientific America

> The physics of the future, of course, cannot have the three quantities h-bar, e and c all as fundamental quantities. Only two of them can be fundamental, and the third must be derived from those two. It is almost certain that c will be one of the two fundamental ones. The velocity of light, c, is so important in the four-dimensional picture, and it plays such a fundamental role in the special theory of relativity, correlating our units of space and time, that it has to be fundamental.

> I think one is on safe ground if one makes the guess that in the physical picture we shall have at some future stage e and c will be fundamental quantities and h-bar will be derived

## Einstein

[The Einstein-Freud Correspondence (1931-1932)](https://www.public.asu.edu/~jmlynch/273/documents/FreudEinstein.pdf)

## rankings

https://physicstoday.scitation.org/do/10.1063/pt.6.1.20180607a/full/
https://fabpedigree.com/james/mathmen.htm

https://www.quora.com/Who-are-currently-the-best-condensed-matter-physicists