[tompe]

Originally Posted by Krystian Galaj

Actually, atheism seems to be the belief that there is no god. The lack of belief would be agnosticism. Most people are apatheists without thinking though.

According to Wikipedia:
http://en.wikipedia.org/wiki/Atheism
http://en.wikipedia.org/wiki/Agnosticism
http://en.wikipedia.org/wiki/Apatheism

Just some more words to spend time on

Well the Atheism entry says "It is also[3] defined more broadly as an absence of belief in deities". Sometimes there is a distinction between strong and weak Atheism. And Agnosticism is even harder to define than Atheism.

But what I meant with lack of belief was as in lack of belief that santa clause exists which lead you to say things like "santa clause does not exist". You do not have to disprove the existence to make such statements.