The main theorem of the Galois theory proven with ideas from the first M\'emoire of Galois

A proof of the main theorem of the Galois theory is presented using the main theorem of symmetric polynomials. The idea originated from studying the “M'emoire sur les conditions de r'esolubilit'e des 'equations par radicaux” of Evariste Galois. The motto “Read the masters” pays off.