In addition, he wrote a master piece “Harmonia cósmica na pintura de Leonardo (da Vinci), ("Cosmic Harmony in the paintings of Leonardo"), a well illustrated book also published, in 1965, by UFGM Printing House. This work was sent to most relevant libraries in Brazil and abroad. In this work, he maintains that Leonardo, before painting his pictures, used to draw a series of geometrical figures in order to get a harmonic balance between his work and the numbers that can be found in the geometry of the known universe of his epoch, that is the solar system.