Earlier quoted context omitted.
https://en.m.wikipedia.org/wiki/Pierre-Simon_Laplace According to his great-great-grandson,[4] d'Alembert received him rather poorly, and to get rid of him gave him a thick mathematics book, saying to come back when he had read it. When Laplace came back a few days later, d'Alembert was even less friendly and did not hide his opinion that it was impossible that Laplace could have read and understood the book. But upo…
So, look for an undemanding job and have a side project?!
That worked for Einstein.