The Subjectivity of Good, Evil, and Morality

I tackle the ideas of good, evil, and morality in my latest column. It begins:
I think an often overlooked concept in ethics (at least to my admittedly limited knowledge on the subject) is the subjective nature of "good" and "evil." Along with that, the idea of "objective morality" seems to me to be an oxymoron. What is considered evil by one person may be considered good by another. Likewise, what is considered an immoral act by one may be moral to another. Can good, evil, and morality be objectively defined? I think so, but only in the broader context of subjectivity, or, only relative to the ends being sought by human action.