Among the many quotes ascribed to Einstein, I could find only one about fame, and it is right from the year he had
become world-famous: “With fame I become more and more stupid, which of course is a very common phenomenon.” (Ich
werde nämlich mit der Berühmtheit immer dümmer, was ja eine ganz gewöhnliche Erscheinung ist.) Letter to H. Zangger
of 24 December 1919.