Some defamers of Einstein wrongfully charge him with being a nitwit
pretender who stole his work from others. Einstein's own generation of
physicists did not believe that. How is this contradiction to be
resolved? Simple. The defamers are liars.

Below is a testimony from Wolfgang Pauli about Einstein's huge
contributions to QM, found in

EINSTEIN'S CONTRIBUTIONS TO QUANTUM THEORY, p149--160, Albert
Einstein, Philosopher-Scientist, Vol 1.

The entire essay is an honor to Einstein's contributions to QM. I
offer just one excerpt from it:

--- p.155 ---

......

With Bohr's successful application of quantum theory to the
explanation of the line spectra of the elements with help of his
well-known two "fundamental postulates of quantum theory" (1913), a
rapid development started, in the course of which the quantum theory
was liberated from the restriction to such particular systems as
Planck's oscillators.

Therefore the problem arose of deriving Planck's radiation formula
using general assumptions holding for all atomic systems in accordance
with Bohr's postulates. This problem was solved by Einstein in 1917 in
a famous paper [13] which can be considered as the peak of one stage
of Einstein's achievements in quantum theory (see also [10] and [11])
and as the ripe fruit of his earlier work on the Brownian movement.
With the help of general statistical laws for the spontaneous and
induced emission processes and for the absorption processes which are
the inverse of the former, he could derive Planck's formula under the
assumption of the validity of two general relations between the three
co-efficients which determine the frequency of these processes and
which, if one of these co-efficients is given, permits the computation
of the other two. As these results of Einstein are today contained in
all textbooks of quantum theory, it is hardly necessary to discuss
here the details of this theory and its later generalization to more
complicated radiation processes [15].

Patrick