The word "humanism" has a number of meanings. And because authors and speakers often don't clarify which meaning they intend, those trying to explain humanism can easily become a source of confusion. Fortunately, each meaning of the word constitutes a different type of humanism—the different types being easily separated and defined by the use of appropriate adjectives. So it is relatively easy to summarize the varieties of humanism in this way.
1. Humanism is one of those philosophies for people who think for themselves. There is no area of thought that a Humanist is afraid to challenge and explore.
2. Humanism is a philosophy focused upon human means for comprehending reality. Humanists make no claims to possess or have access to supposed transcendent knowledge.
3. Humanism is a philosophy of reason and science in the pursuit of knowledge. Therefore, when it comes to the question of the most valid means for acquiring knowledge of the world, Humanists reject arbitrary faith, authority, revelation, and altered states of consciousness.