I assume he means "good" as in "perfect," or someone who has never sinned. You can be the model of human kindness and good behavior, but if you ever lied to your kid... you're not "good." Ever stole a pencil from work? You filthy sinner! Ever had an impure thought? What's that? ALL THE TIME??? Sinner, sinner, sinner!!! Hell awaits!
"Well, evolution is a theory. It is also a fact. And facts and theories are different things, not rungs in a hierarchy of increasing certainty. Facts are the world's data. Theories are structures of ideas that explain and interpret facts. Facts don't go away when scientists debate rival theories to explain them. Einstein's theory of gravitation replaced Newton's in this century, but apples didn't suspend themselves in midair, pending the outcome. And humans evolved from ape- like ancestors whether they did so by Darwin's proposed mechanism or by some other yet to be discovered."
-Stephen Jay Gould
-Stephen Jay Gould