In philosophy class I think we finally decided that 'good' is an infinitely recursive term - it can't be defined except in terms of itself. Good is good because it's better than bad, though why it's better to be good than bad depends on how you define good, and on and on.
Orson Scott CardWhat a laugh, though. To think that one human being could ever really know another. You could get used to each other, get so habituated that you could speak their words right along with them, but you never know why other people said what they said or did what they did, because they never even know themselves. Nobody understands anybody.
Orson Scott CardAn eye for an eye? How Christian of you.' Unbelievers always want other people to act like Christians.
Orson Scott Card