Scholars have indicated that global atheism may be in decline due to irreligious countries having the lowest birth rates in the world and religious countries having higher birth rates in general. Since conceptions of atheism vary, accurate estimations of current numbers of atheists are difficult. secular humanism), there is no ideology or code of conduct to which all atheists adhere. Although some atheists have adopted secular philosophies (e.g. Nonbelievers contend that atheism is a more parsimonious position than theism and that everyone is born without beliefs in deities therefore, they argue that the burden of proof lies not on the atheist to disprove the existence of gods but on the theist to provide a rationale for theism. Rationales for not believing in deities include the lack of evidence, the problem of evil, the argument from inconsistent revelations, the rejection of concepts that cannot be falsified, and the argument from nonbelief. Īrguments for atheism range from philosophical to social and historical approaches. In 1967, Albania declared itself the first official atheist country according to its policy of state Marxism. The French Revolution, noted for its 'unprecedented atheism', witnessed the first significant political movement in history to advocate for the supremacy of human reason. The first individuals to identify themselves as atheists lived in the 18th century during the Age of Enlightenment.

Atheism is contrasted with theism, which in its most general form is the belief that at least one deity exists.

In an even narrower sense, atheism is specifically the position that there are no deities. Less broadly, atheism is a rejection of the belief that any deities exist. Atheism, in the broadest sense, is an absence of belief in the existence of deities.

Bible quiz with answers in tamil