"I'll eat my hat if that isn't Einstein" (Einstein as seen by another scientist, Norbert Wiener)
libraries.mit.edu
libraries.mit.edu
That is an astoundingly accurate prediction for 1925.
A good example of how received opinions can effect our assessments of people. Had Einstein been an important but un-famous scientist, no one would ever write shmaltz like that about him on a casual meeting.
It is not at all surprising that a prodigy and professor of mathematics would have a high opinion of another professor or scientist who impressed him with his intelligence or character, whether famous or not.