  Weyl’s analysis did have a significant impact on the development of  the Maxwell-Dirac theory; however, as Coleman and Korté (2001) have argued, Weyl’s early analysis of the transformations \(\mathbf{C},  \mathbf{P}, \mathbf{T}\) and \(\mathbf{CPT}\) was, for the most part, lost to  subsequent researchers and had to be essentially re-invented.  However, it should be noted in this context that Schwinger (1988,  107–129) was greatly influenced by Weyl’s book. Schwinger makes particular reference to Weyl’s work on the discrete symmetries and  says that this work “… was the starting point of my own  considerations concerning the connection between spin and statistics, which culminated in what is now referred to as the TCP—or some permutation thereof—theorem”. 