My decision to come to Bell Telephone Laboratories immediately after obtaining my Ph.D. in 1936 was strongly influenced by the fact that my supervisor would be C. J. Davisson.
I was not allowed to take spherical trigonometry because I'd sprained my ankle. Because I'd sprained my ankle, I had an incomplete in gym, phys ed. And the rule was that if you had an incomplete in anything, you were not allowed to take an overload.