Secularism: A system of political or social philosophy that rejects all forms of religious faith and worship. The belief that religion should not play a role in government, education, or other public parts of society.
Humanism: A system of values and beliefs that is based on the idea that people are basically good and that problems can be solved using reason instead of religion. A philosophy that usually rejects supernaturalism and stresses an individual's dignity and worth and capacity for self-realization through reason.
Naturalism. 1. An action, inclination, or thought based only on natural desires and instincts. 2. A theory denying that an event or object has a supernatural significance; specifically : the doctrine that scientific laws are adequate to account for all phenomena. Merriam-Webster
Scientific Naturalism: The view that the universe, its characteristics, and its behaviors are to be investigated and understood in purely naturalistic terms. Everything that exists and everything that occurs is part of the natural universe and is subject to examination.
Scientific Naturalism assumes that the universe is a closed system where all events occur for naturalistic reasons and that there cannot be anything or anyone from outside that system which acts upon it. Therefore, Scientific Naturalism excludes the possibility of the supernatural and God as an explanation for any phenomena.
Secular Humanism: An attempt to function as a civilized, secular society with the exclusion of God and any type of absolute moral truth or principles. The primary focus of Humanism is to exclude any kind of supernatural answers from the questions of life. Humanism holds that the universe exists for no purpose. We are the result of a blind and random process that does not necessitate any kind of meaning.
Secular humanists place religion outside science. It's a mythological, touchy-feely realm of emotions that is irrelevant and obsolete -- an evolutionary feature that has yet to be completely discarded.
Secular Humanism - Main Tool is Evolutionary Thought
Secular Humanism is manifested in Evolutionary Theory. To satisfy the fundamental question of "Where did we come from?" children are taught the doctrine of Evolution. The first plank of the Humanist Manifesto states: "Religious humanists regard the universe as self-existing and not created."
The second plank states: "Humanism believes that man is a part of nature and that he has emerged as a result of a continuous process." Certainly, the public school system propagates the Humanist doctrine (clearly an atheistic "religion"), and thus, condemns the concept of God.
This is an amazing irony. Creation Science has been successfully kept out of the public schools by organizations such as the American Civil Liberties Union (A.C.L.U.) on the grounds that Creation is religious, and the government should not support religion in any fashion. "In fact, evolution became in a sense a scientific religion; almost all scientists have accepted it, and many are prepared to 'bend' their observations to fit with it." (H. S. Lipson, FRS, Professor of Physics, University of Manchester, UK, "A Physicist Looks at Evolution", Physics Bulletin, vol. 31, May 1980, pg. 138).
Supreme Court Rules Secular Humanism is a religion "for free exercise clause purposes." Justice Harlan summed it all up:
[Footnote 8] This Court has taken notice of the fact that recognized "religions" exist that "do not teach what would generally be considered a belief in the existence of God," Torcaso v. Watkins, 367 U.S. 488, 495 n. 11, e. g., "Buddhism, Taoism, Ethical Culture, SECULAR HUMANISM and others." Ibid. See also Washington Ethical Society v. District of Columbia, 101 U.S. App. D.C. 371, 249 F.2d 127 (1957); 2 Encyclopaedia of the Social Sciences 293; J. Archer, Faiths Men Live By 120-138, 254-313 (2d ed. revised by Purinton 1958); Stokes & Pfeffer, supra, n. 3, at 560. Welsh v. United States 398 U.S. 333 (1970) note 8
Supreme Court Rules Secular Humanism is not a religion "for establishment clause purposes." In Peloza v. Capistrano Unified School Dist., 37 F.3d 517 (9th Cir. 1994), a high school biology teacher tried to balance the teaching of evolutionism with creationism based on the claim that Secular Humanism (and its core belief, evolutionism) is a religion.
The court emphatically rejected this claim:
We reject this claim because neither the Supreme Court, nor this circuit, has ever held that evolutionism or secular humanism are "religions" for Establishment Clause purposes.
The first Humanist Manifesto spoke openly of Humanism as a religion. Many other Humanists could be cited who have acknowledged that Humanism is a religion.
So in summing it all up: Secular Humanism is a religion "for free exercise clause purposes," and it is not a religion "for establishment clause purposes."
Is this a case of wanting to have your cake and eat it too?