Secular Humanism and Humanity: What are they?

[Jenny A]

You might phrase the same question this way: What (if anything), besides genetic code and genetic expression, distinguishes a thing as human?

The sure and certain knowledge that I will one day die. Humans are (insofar as we know) the only organisms that possess a sense of their own mortality.

As to the rest of your opening question, secular humanism - at its core, I think - is the position that human morality is an exclusively human concern, because it is a uniquely human creation.

I hope this helps.

Boru

I forgot knowledge of death. I think it comes with self awareness and rationality though.