In my experience, you really should have a closed mind to be an effective scientist

[struggle4progress]

47. That's not exactly true, since Einstein received the Nobel Prize for one of the earliest

quantization papers, namely, his 1905 paper on the photoelectric effect

And in BL van der Waerden's Sources of Quantum Mechanics, you can find a very lucid 1917 paper by Einstein exploring the implications of quantized light emission from an atom

One should also note that de Broglie's wave-length is most easily suggested by combining a simple version of Planck quantization with Einstein's famous mass-energy equivalence relation: His 1924 Recherches sur la théorie des quanta (Research on the Theory of the Quanta), introduced his theory of electron waves. This included the wave–particle duality theory of matter, based on the work of Max Planck and Albert Einstein on light. The thesis examiners, unsure of the material, passed his thesis to Einstein for evaluation who endorsed his wave–particle duality proposal wholeheartedly; de Broglie was awarded his doctorate