Mário Ferreira dos Santos

Mário Ferreira dos Santos
Born	3 January 1907 Tietê, São Paulo, Brazil
Died	11 April 1968(1968-04-11) (aged 61) São Paulo, São Paulo, Brazil
Residence	Brazil
Nationality	Brazilian
Era	20th-century philosophy
Region	Western philosophy
School	Pythagoreanism Platonism Thomism Scotism Mutualism
Main interests	Dialectic Logic Ontology Epistemology Psychology Anthropology Sociology
Influences Laozi Pythagoras Plato Aristotle Nagarjuna Plotinus St. Augustine Proclus Ibn-Sīnā St. Bonaventure St. Thomas Duns Scotus Nicholas of Cusa Suárez Descartes Spinoza Pascal Leibniz Goethe Kant Fichte Schelling Hegel Stirner Proudhon Marx Kropotkin Guyau James Nietzsche Cassirer Husserl Heidegger Scheler Spengler Jung Maréchal Pradines Sertillanges Gilson Lavelle Le Senne Foulquié Piaget Fuetscher Koffka Susanne Langer Lupasco Fabro Ruyer

Mário Ferreira dos Santos (January 3, 1907 – April 11, 1968) was a Brazilian philosopher. Born in Tietê, São Paulo, Ferreira dos Santos was raised in Pelotas, Rio Grande do Sul, and graduated in Law and Social Sciences at the Federal University of Rio Grande do Sul.

A prolific writer and thinker, Ferreira dos Santos published in less than fifteen years the 45-volume Encyclopedia of Philosophical and Social Sciences.

He created a philosophical system called Concrete Philosophy. His system was based on the méthode des démonstrations géométriques, with no possibility of disagreement from its assumptions – which he called "theses". The first thesis is the very foundation of his philosophy: "There is something whilst there isn't the absolute nothing", from which he draws other theses through the methods of geometry.

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