The important thing is not to be human but to be humane.
- Eliezer Yudkowsky

Though we might wish to believe that Hitler was an inhuman monster, he was, in fact, a
human monster; and Gandhi is noted not for being remarkably human but for being remarkably humane.

The attributes of our species are not exempt from ethical examination in virtue of being "natural" or "human". Some human attributes, such as empathy and a sense of fairness, are positive; others, such as a tendency toward tribalism or groupishness, have left deep scars on human history. If there is value in being human, it comes, not from being "normal" or "natural", but from having within us the raw material for humaneness:
compassion, a sense of humor, curiosity, the wish to be a better person. Trying to preserve "humanness", rather than cultivating humaneness, would idolize the bad along with the good. One might say that if "human" is what we are, then "humane" is what we, as humans, wish we were. Human nature is not a bad place to start that journey, but we can't fulfill that potential if we reject any progress past the starting point.

Eliezer Yudkowsky to Nick Bostrom on WTA-Talk list, August 23, 2003