Axiom
WordNet
noun
(1) (logic) a proposition that is not susceptible of proof or disproof; its truth is assumed to be selfevident
(2) A saying that is widely accepted on its own merits
WiktionaryText
Etymology
From < < < < .
Noun
 A selfevident and necessary truth; a proposition which it is necessary to take for granted; a proposition whose truth is so evident that no reasoning or demonstration can make it plainer.
 A fundamental theorem that serves as a basis for deduction of other theorems. E.g., "A point has no mass; a line has no width. A plane is a flat surface with no mass and contains an infinity of points and lines".
 An established principle in some art or science that is universally received.

 The axioms of political economy cannot be considered absolute truths.