An article I often point people to is "Why We Need Friendly AI", an older (2004) article by Eliezer Yudkowsky on the challenge of Friendly AI:
There are certain important things that evolution created. We don't know that evolution reliably creates these things, but we know that it happened at least once. A sense of fun, the love of beauty, taking joy in helping others, the ability to be swayed by moral argument, the wish to be better people. Call these things humaneness, the parts of ourselves that we treasure â€“ our ideals, our inclinations to alleviate suffering. If human is what we are, then humane is what we wish we were. Tribalism and hatred, prejudice and revenge, these things are also part of human nature. They are not humane, but they are human. They are a part of me; not by my choice, but by evolution's design, and the heritage of three and half billion years of lethal combat. Nature, bloody in tooth and claw, inscribed each base of my DNA. That is the tragedy of the human condition, that we are not what we wish we were. Humans were not designed by humans, humans were designed by evolution, which is a physical process devoid of conscience and compassion. And yet we have conscience. We have compassion. How did these things evolve? That's a real question with a real answer, which you can find in the field of evolutionary psychology. But for whatever reason, our humane tendencies are now a part of human nature.
We need to develop our conception of "good" to mean certain cognitive features built by evolution, rather than some metaphysical miasma floating around.