(Sanskrit नास्तिक) Literally, "atheist, unbeliever, freethinker." In esotericism, this word is used to refer to the necessity to look beyond beliefs or physical things, such as a physical statue or idol of a divine being, to instead seek the reality of that being. In other words, those who seek the truth must reject idols, ideas, and beliefs.
"Religious esotericism does not teach atheism of any kind, except in the sense that the Sanskrit word nastika encloses: no admission of idols, including that anthropomorphic God of the ignorant populace. It would be an absurdity to believe in a celestial dictator who is seated upon a throne of tyranny and throws lightning and thunderbolts against this sad human ant hill." - Samael Aun Weor, The Three Mountains