This is thought to refer to the use, in A Treatise on Electricity and Magnetism of the potentials A and Ψ as fundamental. That Maxwell adopted "methods akin to those of Faraday" "from the first" in the Elementary Treatise gives it an important place in our understanding of what Maxwell might have done with the full mathematical treatment of the second edition of A Treatise on Electricity and Magnetism. For this reason, and owing to the less technical presentation of the Elementary Treatise, the latter has been called "the final, unfinished expression of the understanding [Maxwell] achieved by studying and extending Faraday’s work". Maxwell's relationship with Michael Faraday 's work was foundational: as a young man, embarking on his study of electricity, Maxwell decided "to read no mathematics on the subject till I had first read through Faraday's Experimental Researches." Both Maxwell and Faraday styled themselves ' natural philosopher ' rather than the newly coined 'scientist' or 'physicist'. Ultimately, however, Maxwell's Treatise on Electricity and Magnetism offered what Maxwell called a 'translation' of Faraday's intuitive experimental approach into a fully mathematical treatment of electrical and magnetic phenomena, specifically Faraday's ' fields '. Maxwell's early death at the age of forty-eight interrupted his work on a revised second edition of the Treatise on Electricity and Magnetism, as well as the Elementary Treatise. In the introduction to the Dover edition of the Elementary Treatise, Peter Pesic argues that the original editor Garnett saw the book as "an alternative to the first part" of the Treatise on Electricity and Magnetism, but that Maxwell himself had understood the Elementary Treatise as an entirely different work: