Atheism

Some positive atheists have maintained that the existence of evil makes the existence of God improbable. In particular, atheists assert that theism does not provide an adequate explanation for the existence of seemingly gratuitous evil, such as the suffering of innocent children. Theists commonly defend the existence of evil by claiming that God desires that human beings have the freedom to choose between good and evil, or that the purpose of evil is to build human character, such as the ability to persevere. Positive atheists counter that justifications for evil in terms of human free will leave unexplained why, for example, children suffer because of genetic diseases or abuse from adults. Arguments that God allows pain and suffering to build human character fail, in turn, to explain why there was suffering among animals before human beings evolved and why human character could not be developed with less suffering than occurs in the world. For atheists, a better explanation for the presence of evil in the world is that God does not exist.

Atheists have also criticized historical evidence used to support belief in the major theistic religions. For example, atheists have argued that a lack of evidence casts doubt on important doctrines of Christianity, such as the virgin birth and the resurrection of Jesus Christ. Because such events are said to represent miracles, atheists assert that extremely strong evidence is necessary to support their occurrence. According to atheists, the available evidence to support these alleged miracles—from Biblical, pagan, and Jewish sources—is weak, and therefore such claims should be rejected.

Atheism is primarily a reaction to, or a rejection of, religious belief, and thus does not determine other philosophical beliefs. Atheism has sometimes been associated with the philosophical ideas of materialism, which holds that only matter exists; communism, which asserts that religion impedes human progress; and rationalism, which emphasizes analytic reasoning over other sources of knowledge. However, there is no necessary connection between atheism and these positions. Some atheists have opposed communism and some have rejected materialism. Although nearly all contemporary materialists are atheists, the ancient Greek materialist Epicurus believed the gods were made of matter in the form of atoms. Rationalists such as French philosopher René Descartes have believed in God, whereas atheists such as Sartre are not considered to be rationalists. Atheism has also been associated with systems of thought that reject authority, such as anarchism, a political theory opposed to all forms of government, and existentialism, a philosophic movement that emphasizes absolute human freedom of choice; there is however no necessary connection between atheism and these positions. British analytic philosopher A. J. Ayer was an atheist who opposed existentialism, while Danish philosopher Søren Kierkegaard was an existentialist who accepted God. Marx was an atheist who rejected anarchism while Russian novelist Leo Tolstoy, a Christian, embraced anarchism. Because atheism in a strict sense is merely a negation, it does not provide a comprehensive worldview. It is therefore not possible to presume other philosophical positions to be outgrowths of atheism.

Intellectual debate over the existence of God continues to be active, especially on college campuses, in religious discussion groups, and in electronic forums on the Internet. In contemporary philosophical thought, atheism has been defended by British philosopher Antony Flew, Australian philosopher John Mackie, and American philosopher Michael Martin, among others. Leading organizations of unbelief in the United States include The American Atheists, The Committee for the Scientific Study of Religion, and The Internet Infidels.