«…the four stages which are the temptation of the World — Dogma, Concrete Intelligence or Science, Abstract Intelligence or Philosophy, and Critical Intelligence.
Dogma, by which he is tied to others;
Science, by which he is tied to Nature;
Philosophy, by which he is tied to the minds of others;
his own philosophy, by which he is tied to himself.
For the World is all these.»
– Fernando Pessoa, s.d., “Essay on Initiation” in “Fernando Pessoa e a Filosofia Hermética – Fragmentos do espólio” (Introdução e organização de Yvette K. Centeno). Lisboa: Presença, 1985. -78.