dogma

An authoritative principle, belief or statement of opinion, especially one considered to be absolutely true and indisputable, regardless of evidence or without evidence to support it.

If he has a dogma, i.e. a scientifico-philosophical theory, then he is not any sort of Skeptic, not even an urbane Skeptic.

A doctrine (or set of doctrines) relating to matters such as morality and faith, set forth authoritatively by a religious organization or leader.

In the Catholic Church, new dogmas can only be declared by the pope after the extremely rare procedure ex cathedra to make them part of the official faith.

According to that Cabaliſticall Dogma: If Abram had not had this Letter [i.e., ה (he)] added unto his Name he had remained fruitleſſe, and without the power of generation: […] So that being ſterill before, he received the power of generation from that meaſure and manſion in the Archetype; and was made conformable unto Binah.