AtheismAtheism, in the broadest sense, is an absence of belief in the existence of deities. Less broadly, atheism is a rejection of the belief that any deities exist. In an even narrower sense, atheism is specifically the position that there no deities. Atheism is contrasted with theism, which in its most general form is the belief that at least one deity exists. The first individuals to identify themselves as atheists lived in the 18th century during the Age of Enlightenment.
NontheismNontheism or non-theism is a range of both religious and non-religious attitudes characterized by the absence of espoused belief in the existence of a God or gods. Nontheism has generally been used to describe apathy or silence towards the subject of gods and differs from atheism, or active disbelief in any gods. It has been used as an umbrella term for summarizing various distinct and even mutually exclusive positions, such as agnosticism, ignosticism, ietsism, skepticism, pantheism, pandeism, transtheism, atheism (strong or positive, implicit or explicit), and apatheism.
AntitheismAntitheism, also spelled anti-theism, is the philosophical position that theism should be opposed. The term has had a range of applications. In secular contexts, it typically refers to direct opposition to the belief in any deity. The word antitheism (or hyphenated anti-theism) has been recorded in English since 1788. The etymological roots of the word are the Greek anti and theos. The Oxford English Dictionary defines antitheist as "One opposed to belief in the existence of a god".
Existence of GodThe existence of God (or more generally, the existence of deities) is a subject of debate in theology, philosophy of religion and popular culture. A wide variety of arguments for and against the existence of God or deities can be categorized as logical, empirical, metaphysical, subjective or scientific. In philosophical terms, the question of the existence of God or deities involves the disciplines of epistemology (the nature and scope of knowledge) and ontology (study of the nature of being or existence) and the theory of value (since some definitions of God include "perfection").
IgnosticismIgnosticism or igtheism is the idea that the question of the existence of God is meaningless because the word "God" has no coherent and unambiguous definition. The term ignosticism was coined in 1964 by Sherwin Wine, a rabbi and a founding figure of Humanistic Judaism. Ignosticism and theological noncognitivism are similar although whereas the ignostic says "every theological position assumes too much about the concept of God", the theological noncognitivist claims to have no concept whatever to label as "a concept of God", but the relationship of ignosticism to other nontheistic views is less clear.
Spectrum of theistic probabilityPopularized by Richard Dawkins in The God Delusion, the spectrum of theistic probability is a way of categorizing one's belief regarding the probability of the existence of a deity. J. J. C. Smart argues that the distinction between atheism and agnosticism is unclear, and many people who have passionately described themselves as agnostics were in fact atheists. He writes that this mischaracterization is based on an unreasonable philosophical skepticism that would not allow us to make any claims to knowledge about the world.
IrreligionIrreligion is the neglect or active rejection of religion and, depending on the definition, a simple absence of religion. Irreligion takes many forms, ranging from the casual and unaware to full-fledged philosophies such as atheism and agnosticism, secular humanism and antitheism. Social scientists tend to define irreligion as a purely naturalist worldview that excludes a belief in anything supernatural. The broadest and loosest definition, serving as an upper limit, is the lack of religious identification, though many non-identifiers express metaphysical and even religious beliefs.
AgnosticismAgnosticism is the view or belief that the existence of God, of the divine or the supernatural is unknown or unknowable. It can be categorized as an indifference or absence of firm beliefs in theistic religions and atheism on that basis. Another definition provided is the view that "human reason is incapable of providing sufficient rational grounds to justify either the belief that God exists or the belief that God does not exist.
Secular humanismSecular humanism is a philosophy, belief system or life stance that embraces human reason, secular ethics, and philosophical naturalism while specifically rejecting religious dogma, supernaturalism, and superstition as the basis of morality and decision making. Secular humanism posits that human beings are capable of being ethical and moral without religion or belief in a deity. It does not, however, assume that humans are either inherently good or evil, nor does it present humans as being superior to nature.
Richard DawkinsRichard Dawkins (born 26 March 1941) is a British evolutionary biologist and author. He is an emeritus fellow of New College, Oxford, and was Professor for Public Understanding of Science in the University of Oxford from 1995 to 2008. His 1976 book The Selfish Gene popularised the gene-centred view of evolution, as well as coining the term meme. Dawkins has won several academic and writing awards. Dawkins is well known for his criticism of creationism and intelligent design as well as for being a vocal atheist.
