Postulate

noun
(logic) a proposition that is accepted as true in order to provide a basis for logical reasoning
Similar: posit
verb
take as a given; assume as a postulate or axiom
“He posited three basic laws of nature”
Similar: posit
verb
require as useful, just, or proper
“It takes nerve to do what she did”
Similar: necessitate, ask, need, require, take, involve
verb
maintain or assert
“He contended that Communism had no future”
Similar: contend