 According to a 2010 study by the Pew Research Center, about 70.6% of the Americas population identified themselves as Christians, (90% in Latin America and 77% in North America).In his 1961 "The Death of God", the French theologian Gabriel Vahanian argued that modern secular culture in most of Western civilization had lost all sense of the sacred, lacked any sacramental meaning, and disdained any transcendental purpose or sense of providence, bringing him to the conclusion that for the modern mind, "God is dead".Thomas J. J. Altizer and William Hamilton of Emory University drew upon a variety of sources, including the aphorisms of Dietrich Bonhoeffer's "Letters and Papers from Prison", and brought this line of thought to public attention in a short-lived intellectual movement of the mid-to-late-1960s among Protestant theologians and ministerial students.