humanists i have known.. in australia at least, humanists seem to reject the validity of anything verging on mystical, religious or that cant be 'proven' in favour of scientific skepticism and the scientific method. Humanists here are big on ethical behaviour for its own sake, as opposed to morality inspired by religious opinion.

A humanist approach here is to seek truth by logic, using evidence and demonstrable outcomes as opposed to seeking it through revelation, mysticism, or faith. Secular humanists generally believe that following humanist principles leads to secularism, on the basis that supernatural beliefs cannot be supported using rational arguments and therefore the supernatural aspects of religiously associated activity should be rejected.

I've just done a quick wiki check and found this definition:

"Humanism is a democratic and ethical life stance, which affirms that human beings have the right and responsibility to give meaning and shape to their own lives. It stands for the building of a more humane society through an ethic based on human and other natural values in the spirit of reason and free inquiry through human capabilities. It is not theistic, and it does not accept supernatural views of reality." - International Humanist and Ethical Union

freda