Atheism is, in a broad sense, the rejection of belief in the existence of deities. In a narrower sense, atheism is specifically the position that there are no deities. Most inclusively, atheism is simply the absence of belief that any deities exist. Atheism is contrasted with theism, which in its most general form is the belief that at least one deity exists.

The term atheism originated from the Greek ἄθεος (atheos), meaning "without god", used as a pejorative term applied to those thought to reject the gods worshipped by the larger society. With the spread of freethought, skeptical inquiry, and subsequent increase in criticism of religion, application of the term narrowed in scope. The first individuals to identify themselves using the word "atheist" lived in the 18th century.

Atheists tend to be skeptical of supernatural claims, citing a lack of empirical evidence for deities. Rationales for not believing in any deity include the problem of evil, the argument from inconsistent revelations, and the argument from nonbelief. Other arguments for atheism range from the philosophical to the social to the historical. Although some atheists have adopted secular philosophies, there is no one ideology or set of behaviors to which all atheists adhere. Many atheists hold that atheism is a more parsimonious worldview than theism, and therefore the burden of proof lies not on the atheist to disprove the existence of God, but on the theist to provide a rationale for theism.

Alain de Botton, FRSL (born Zurich, 20 December 1969) is a Swiss writer, philosopher, television presenter and entrepreneur, resident in the United Kingdom. His books and television programmes discuss various contemporary subjects and themes, emphasizing philosophy's relevance to everyday life. At 23, he published Essays In Love (1993), which went on to sell two million copies. Other bestsellers include How Proust Can Change Your Life (1997), Status Anxiety (2004) and The Architecture Of Happiness (2006). In August 2008, he was a founding member of a new educational establishment in central London called The School of Life. In May 2009, he was a founding member of a new architectural organization called "Living Architecture". In October that year, de Botton was appointed an Honorary Fellow of the Royal Institute of British Architects, in recognition of his services to architecture. In 2011, de Botton was elected as a Fellow of the Royal Society of Literature (FRSL).

Born in Zurich, de Botton comes from a Sephardic Jewish family, originating from a small Castilian town of Boton (now vanished) on the Iberian peninsula. His ancestors include Abraham de Boton. His paternal grandmother was Yolande Harmer. His father, Gilbert de Botton, was the co-founder of Global Asset Management. His wealth was estimated by one source to be £234 million in 1999. He has one sister Miel and they received a secular upbringing. De Botton spent the first twelve years of his life in Switzerland where he was brought up to speak French and German.

Clinton Richard Dawkins, FRS, FRSL (born 26 March 1941), known as Richard Dawkins, is a British ethologist, evolutionary biologist and author. He is an emeritus fellow of New College, Oxford, and was the University of Oxford's Professor for Public Understanding of Science from 1995 until 2008.

Dawkins came to prominence with his 1976 book The Selfish Gene, which popularised the gene-centered view of evolution and introduced the term meme. In 1982 he introduced an influential concept into evolutionary biology, presented in his book The Extended Phenotype, that the phenotypic effects of a gene are not necessarily limited to an organism's body, but can stretch far into the environment, including the bodies of other organisms.

Dawkins is an atheist, a vice president of the British Humanist Association, and a supporter of the Brights movement. He is well known for his criticism of creationism and intelligent design. In his 1986 book The Blind Watchmaker, he argued against the watchmaker analogy, an argument for the existence of a supernatural creator based upon the complexity of living organisms. Instead, he described evolutionary processes as analogous to a blind watchmaker. He has since written several popular science books, and makes regular television and radio appearances, predominantly discussing these topics. In his 2006 book The God Delusion, Dawkins contends that a supernatural creator almost certainly does not exist and that religious faith is a delusion—"a fixed false belief." As of January 2010 the English-language version has sold more than two million copies and had been translated into 31 languages.