Skeptic [Latin scepticus, Greek skeptikos] thoughtful, inquiring, to consider, a person who habitually doubts, questions, or suspends judgment upon matters generally accepted.

”I was at this time living, like so many atheists or antitheists, in a whirl of contradictions. I maintained that God did not exist. I was also very angry with God for not existing. I was equally angry with Him for creating a world." C.S. Lewis