[1] Ferreira published, in less than fifteen years, the 45-volume Encyclopedia of Philosophical and Social Sciences.

[2] Ferreira created a philosophical system called "concrete philosophy".

The system was based on the méthode des démonstrations géométriques, which, according to Ferreira, no possibility of disagreement from its assumptions – which he called "theses".

The first thesis is the foundation of his philosophy: "There is something whilst there isn't the absolute nothing", from which he draws other theses through the geometric methods.

[3] The list of Ferreira's works was first compiled by Olavo de Carvalho, who also discovered the division of Mário's encyclopedia into three "series".