Henri de Lubac (Atheist Humanism)
A section of the cover of Henri Lubac’s 1944 The Drama of Atheist Humanism, wherein he gives a theistic-purview historical on what he calls “Comtian atheism” (Ѻ) and Auguste Comte's age 24 formulated “law of the three states” of mental progression, Karl Marx, Ludwig Feuerbach, and Friedrich Nietzsche, among others. [2]
In religio-mythology, humanism is

Overview
In 1920s, various humanist groups, in America, began to form, comprised of Unitarian ministers and philosophers. (Ѻ)

In 1933, Roy Sellars and Raymond Bragg penned A Humanist Manifesto, which outlined a 15 statement generic secular belief system, which was signed by those including: John Dewey, Oliver Reiser, among others, the gist of which was a rejection of supernatural, rejection of dualism (affirmation #3), and the general idea that in “place of the old attitudes involved in worship and prayer the humanist finds his religious emotions expressed in a heightened sense of personal life and in a cooperative effort to promote social well-being” (affirmation #9). [2]

In 2012, the American Atheist Association, launched KidsWithoutGod.com (Ѻ), themed as a site for “site for the millions of young people around the world who have embraced science, rejected superstition, and are dedicated to being good without god!”; the site, however, is pretty dumb, being stitched around seven Darwin the Dog “promises” kids are advised to make as their creed, namely: (Ѻ)

1. I promise to be nice to other people, just because it’s the right thing to do.
2. I promise to care for the world around us, because this is our home and we need it to say health and safe.
3. I promise that I will think about the questions I have and learn as much as I can about who things work.
4. I promise that before I say something or do something to another person, I will stop to think about how I would feel if somebody else said that or did that to me.
5. I promise that I will always tell the truth and take responsibility for my own actions.
6. I promise that I will help those who are sad or angry by being a good friend to them.
7. I promise that I will eat health, get plenty of sleep and exercise, and practice good personal hygiene.

This is what we might call “dumb children’s atheism” (compare: smart atheism).

Quotes
The following are related quotes:

“The definition of humanism has been a subject of diverse interpretation almost since the movement began. Some people have been called or call themselves humanists without any clear understanding of what it means. Different factions have arisen such as religious humanists and secular humanists, groups that have often disagreed over matters of definition, but are one in their advocacy of the basic goals.”
— Nicolas Walter (1998), Humanism: Finding Meaning in the Word (Ѻ)

References
1. (a) Humanist Manifesto I – AmericanHumanist.org.
(b) Humanist Manifesto – Wikipedia.
2. Lubac, Henri. (1944). The Drama of Atheist Humanism (translators: Edith Riley and Anne Nash). Publisher, 1949.

Further reading
● Lamont, Corliss. (1993). The Philosophy of Humanism. Continuum.
● Bennett, Helen. (2005). Humanism, What’s That? A Book for Curious Kids. Prometheus.

External links
Humanism – Wikipedia.
List of secular humanists – Wikipedia.

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