According to the book Good without God by Greg M. Epstein, the humanist chaplain at Harvard University, the fourth biggest life adherence in the world today after Christianity, Islam, and Hinduism is now humanism. Humanism is the idea that we do not need religion in order to be good. It differs from atheism in the sense that humanists believe that there is a “God,” but He’s certainly not the judgmental, angry being that many religious texts make Him out to be. Instead, to a humanist, “God” might be the universe, or the connectedness of life on Earth, or spirit. Humanism is opening up a new spiritual path for people who want to reject the Brules of religion but who don’t embrace atheism. One billion humanists now exist on the planet, and their numbers are growing.

This evolution theory is the foundation philosophy for humanism. Humanism is the idea that man is God. After all, there is no God out there, so we must be God. The Bible says, "They did not like to retain God in their knowledge, God gave them over to a reprobate mind." Do humanists believe in a supreme being? Emphatically, yes, that supreme being is man. Humanists have no knowledge of any being more supreme. The turning point in history will be the moment that man becomes aware that the only God of man is man himself.

The definitions of humanism are many, but let us here take it to be the attitude of those men who think it an advantage to live in society, and, at that, in a complex and highly developed society, and who believe that man fulfills his nature and reaches his proper stature in this circumstance. The personal virtues which humanism cherishes are intelligence, amenity, and tolerance; the particular courage it asks for is that which is exercised in the support of these virtues. The qualities of intelligence which it chiefly prizes are modulation and flexibility.

I am a humanist because I think humanity can, with constant moral guidance, create reasonably decent societies. I think that young people who want to understand the world can profit from the works of Plato and Socrates, the behaviour of the three Thomases, Aquinas, More and Jefferson — the austere analyses of Immanuel Kant and the political leadership of Abraham Lincoln and Franklin Roosevelt. [The World Is My Home (1991)]

I found the humanist outlook to be more realistic than religion. Humanism related to me directly, to human beings that I saw and interacted with. That was unlike religion that focused mainly on gods and spirits, which I could not see or really interact with. I also noticed that religion encouraged people to be dishonest, to claim to be seeing what they are not seeing or to be in communication with somebody when they are in communication with nobody. Religion encouraged fakery. So, some of these issues led to me embracing humanism.

I am a humanist because I think humanity can, with constant moral guidance, create reasonably decent societies. I think that young people who want to understand the world can profit from the works of Plato and Socrates, the behaviour of the three Thomases, Aquinas, More and Jefferson — the austere analyses of Immanuel Kant and the political leadership of Abraham Lincoln and Franklin Roosevelt.

Humanism is only another name for spiritual laziness, or a vague half-creed adopted by men of science and logicians whose heads are too occupied with the world of mathematics and physics to worry about religious categories.

We aren’t born with a ready-made conscience. As we pass through life, we hurt people and people hurt us, we act compassionately and others show compassion to us. If we pay attention, our moral sensitivity sharpens, and these experiences become a source of valuable ethical knowledge about what is good, what is right and who I really am.
Humanism thus sees life as a gradual process of inner change, leading from ignorance to enlightenment by means of experiences. The highest aim of humanist life is to fully develop your knowledge through a large variety of intellectual, emotional and physical experiences. In the early nineteenth century, Wilhelm von Humboldt – one of the chief architects of the modern education system – said that the aim of existence is ‘a distillation of the widest possible experience of life into wisdom’. He also wrote that ‘there is only one summit in life – to have taken the measure in feeling of everything human’. This could well be the humanist motto.

The trouble with purging the school curriculum of religious knowledge is that ultimate questions cannot be answered without reference to religious beliefs or at least to philosophy. With religion expelled from the schools, a clear field was left for the entrance of the mode of belief called humanitarianism, or secular humanism — the latter a term employed by the cultural historian Christopher Dawson. During the past four decades and more, the place that religion used to hold in American schooling, always a rather modest and non-dogmatic place, has been filled by secular humanism. Its root principle is that human nature and society may be perfected without the operation of divine grace. . . .

In his book A Common Faith (1934), [John] Dewey advocated his brand of humanism as a religion. "Here are all the elements for a religious faith that shall not be confined to sect, class, or race," he wrote. "Such a faith has always been implicitly the common faith of mankind. It remains to make it explicit and militant."

Much more evidence exists to suggest that humanitarianism, or secular humanism, should be regarded in law as a religion, with respect to both establishment and free exercise in the First Amendment. It is this non-theistic religion, hostile to much of the established morality and many existing American institutions, that has come close to being established as a "civil religion" in American public schools.

Being a Humanist means trying to behave decently without expectation of rewards or punishment after you are dead.

Wojtyla made his own this principle whereby, with the incarnation, Christ in some way unites himself to every man, and reveals to man the meaning of himself. Humanism is entirely founded on Christology, so that man is the obligatory path for the Church, which cannot but dedicate itself to serving the good of man. From these principles derive the rights of the human person, which is the value on which the legitimacy or illegitimacy of all political and social systems is measured.

I decided (after listening to a "talk radio" commentator who abused, vilified, and scorned every noble cause to which I had devoted my entire life) that I was both a humanist and a liberal, each of the most dangerous and vilified type. I am a humanist because I think humanity can, with constant moral guidance, create a reasonably decent society. I am terrified of restrictive religious doctrine, having learned from history that when men who adhere to any form of it are in control, common men like me are in peril. I do not believe that pure reason can solve the perpetual problems unless it is modified by poetry and art and social vision. So I am a humanist. And if you want to charge me with being the most virulent kind—a secular humanist—I accept the accusation.

Rousseauist and Baconian, though often superficially at odds with one another, have co-operated in undermining, not merely religious tradition, but another tradition which in the Occident goes back finally, not to Judea, but to ancient Greece. This older tradition may be defined as humanistic. The goal of the humanist is poised and proportionate living. This he hopes to accomplish by observing the law of measure. ... Decorum is supreme for the humanist even as humility takes precedence over all other virtues in the eyes of the Christian. Traditionally the idea of decorum has been associated, often with a considerable admixture of mere formalism, with the idea of the gentleman. Humanism and religion in their various forms have at times conflicted, but have more often been in alliance with one another. As Burke says in a well-known passage: "Nothing is more certain than that our manners, our civilization, and all the good things that are connected with manners and with civilization, have, in this European world of ours, depended for ages upon two principles; and were indeed the result of both combined; I mean the spirit of a gentleman and the spirit of religion."

Echoing the Christian faith in free will, humanists hold that human beings are – or may someday become – free to choose their lives. They forget that the self that does the choosing has not itself been chosen.