“Talk of secularism is meaningful when it refers to the weakness of traditional religious belief or the lack of power of churches and other religious bodies. That is what is meant when we say Britain is a more secular country than the United States, and in this sense secularism is an achievable condition. But if it means a type of society in which religion is absent, secularism is a kind of contradiction, for it is defined by what it excludes. Post-Christian secular societies are formed by the beliefs they reject, whereas a society that had truly left Christianity behind would lack the concepts that shaped secular thought.”
Post-Apocalypse: After Secularism (pp. 267-8)
Black Mass: Apocalyptic Religion and the Death of Utopia (2007)
Help us to complete the source, original and additional information
John Gray 164
British philosopher 1948Related quotes

Bharatiya Pratinidhi Sabha Session, Indore – September, 7-8, 1968
Quotes from ataljee.org

Source: Multi-Secularism: A New Agenda, (2014), p. 1
Rao (1996) "Significance of Secularism: Atheism is a Way of Live." The Atheist, Vol 28-29 p. 43
Context: Positive secularism is not tolerance of all religions, but it is the total denial of religious beliefs: it is the emergence of homogeneous human outlook which is based upon verifiable facts of life.
Oscar Iden Lecture Series, Lecture 3: "The State of Individuals" (1976)
quoted from Koenraad Elst, On Modi Time : Merits And Flaws of Hindu Activism In Its Day Of Incumbency – 2015. Ch. 3. The Lost Honour of India Studies

"Freedom from Religion", The Nation (19 February 2001) http://www.thenation.com/article/freedom-religion/
Context: A genuinely democratic society requires a secular ethos: one that does not equate morality with religion, stigmatize atheists, defer to religious interests and aims over others or make religious belief an informal qualification for public office. Of course, secularism in the latter sense is not mandated by the First Amendment. It's a matter of sensibility, not law.