Kelly Hollowell, J.D., Ph.D, a law and bioethicist and a member of Science Ministries, discusses four types of ethics.
I’d like to add to the discussion about Spock’s statement about the “good of the many.” The statement is used several times by Spock and other Star Trek characters, from the earliest shows, probably reflecting the views of Ray Bradbury, the creator of the series. (Dating myself, there.)
Spock could have ordered a subordinate to go into danger, but chose to risk himself instead. His justification of self sacrifice sounds like the mantra of Utilitarianism, but his actions reflect Natural Law (as in “you shouldn’t kill other human beings”) – or even Christianity (as in “no greater love than to lay down his life for his brother”).