I think this paper has a very misleading title, as the result it presents is not as remarkable as to be actually proof of what is known as Maxwell&#x27;s equations (they were formulated by Heaviside btw.) Basically what the paper does is that it defines operators for ρ, j, E based on the hindsight knowledge of Maxwell&#x27;s equations and non-relativistic equation of motion for a particle; then it shows that it is possible to have both sets as Heisenberg equations. That&#x27;s definitely <i>not</i> something a physicist would call deriving Maxwell&#x27;s equations. Most of the thing claimed to be derived in the title is actually defined&#x2F;assumed, the result is merely that the Heisenberg formalism, the commutation relations and non-relativistic equation of motion do not seem incompatible. The speed of light in the result is there purely because Dyson knows the result he needs to get.