Following his field work in Germany and the completion of his dissertation, Luckmann was asked to complete several reviews on the surrounding sociological literature concerning religion. Disappointed by the positivistic, unauthentic views of a Church-backed sociology of religion, Luckmann was compelled to write,"The Invisible Religion" in 1963. The book was then translated into English in 1967. Drawing from Durkheim, Luckmann developed a functional perspective in his theoretical objectives. Rather than reverting to popular explanations of secularization, Luckmann explained the emergence of a new kind of religion in the 20th century: private religion He explains the diffusion of world views and institutional de-specialization of religion led to a privatization, rather than a retreat, from religion. Though Luckmann initially received harsh criticisms, "The Invisible Religion" became a pivotal move within the sociology of religion in the 20th century, especially in conjunction with,"The Social Construction of Reality".