The letter e may now no longer be used to denote anything other than this positive universal constant. Edmund Landau More Quotes by Edmund Landau More Quotes From Edmund Landau Asked for a testimony to the effect that Emmy Noether was a great woman mathematician, he said: I can testify that she is a great mathematician, but that she is a woman, I cannot swear. Edmund Landau mathematical women said It gives me the same pleasure when someone else proves a good theorem as when I do it myself. Edmund Landau prove pleasure giving