often seen in the street without a hat

Interestingly, that text reads a lot like humanism to me - with the focus on ethics. Because I don't think that being an atheist does mean that I want disease conquered, or that not being an atheist would mean that I was all about the spreading. And I'm not an atheist because I want the world to be a better place. I do want the world to be a better place, and I'd like it if that "better" was defined on non-religious grounds, which seems more like secular than humanist. It's so confusing! I guess I'm secure with atheism, but hazy on the differences between humanism and secularism.