The great god of nonexistence. As she is quitecranky and irrational, athiests pray to her, asking her not to exist. Non-athiests commonly point out that Athe cannot be prayed to, as she is nonexistent. The answer to this is, of course, is that Athe has a reason for everything and you should not question it.
"Athe gives her thanks, child...or she would, if she existed..."
The state or acknowledgement of existence without deities or without belief in deities. Alternatively, it directly refers to those who actively or passively disbelieve in deities.