Subrahmanyan Chandrasekhar Quote

all the standard equations of mathematical physics can be separated and solved in Kerr geometry.

From Chandrasekhar's Nobel lecture, in his summary of his work on black holes; Republished in: D. G. Caldi, George D. Mostow (1989) Proceedings of the Gibbs Symposium: Yale University, May 15-17, 1989 p. 230