Secular Humanism is even more openly religious than Marxism. The first Humanist Manifesto described the agenda of "religious" Humanists.
The 1980 preface to the Humanist Manifestos I & II, written by Paul Kurtz says, "Humanism is a philosophical, religious, and moral point of view.
"Among religions in this country...[is]... secular humanism"
Supreme Court Justice Black, 1960
Torasco v. Watkins
Humanism believes that mankind should evolve into a world community, and that such a community necessitates a world government. Corliss Lamont declares, "a truly Humanist civilization must be a world civilization."
This sentiment is reiterated in the Humanist Manifesto II: "Each person's future is in some way linked to all. We thus reaffirm a commitment to the building of world community, at the same time recognizing that this commits us to some hard choices." One of these hard choices involves calling for a world government."
The original humanist manifesto did not represent secular humanism. Humanism is, originally, a term for a Christian religious ideal that sees religion as for the benefit of mankind, as opposed to nature worship (as was common among pagans) or merely abstract and capricious demands of God (as was the mindset of the less-educated or utilitarian-educated Christians).