Strong atheism

a condition of being without theistic beliefs; an absence of belief in the existence of gods, thus contrasting with theism. This definition includes both those who assert that there are no gods and those who have no beliefs at all regarding the existence of gods. However, narrower definitions often only qualify the former as atheism, the latter falling under the more general (but rarely used) term nontheism.

• Agnostic atheism - the philosophy that encompasses both atheism and agnosticism. Due to definitional variance, an agnostic atheist does not believe in God or gods and by extension holds true: 'the existence and nonexistence of deities is currently unknown and may be absolutely unknowable', or 'knowledge of the existence and nonexistence of deities is irrelevant or unimportant', or 'abstention from claims of knowledge of the existence and nonexistence of deities is optimal'.

• Strong atheism - the philosophical position that deities do not exist. It is a form of explicit atheism, meaning that it consciously rejects theism. Some strong atheists also claim that the existence of any and all gods is logically impossible. Also called positive atheism, hard atheism and gnostic atheism. It should be noted that a strong atheist also fits the definition of a weak atheist, but that the reverse is not necessarily true: a strong atheist believes there is a lack or absence of evidence for justifying a belief in God or gods, but a weak atheist does not necessarily deny the possibility of God or god(s) existence.

• Weak atheism - disbelief in the existence of God or gods, without a commitment to the necessary non-existence of God or gods. Also referred to as negative atheism or implicit atheism. The weak atheist generally gives a broad definition of atheism as a lack or absence of evidence justifying a belief in God or gods, which defines atheism as a range of positions that entail non-belief, unjustified belief, doubt, or denial of theism.