what are we supposed to say again when christians ask us where we get our morality?

[sixchins]

I'm going to chime in with my first post. I don't know if it's been mentioned already as I don't have patience to read the whole thread, but I think there is a evolutionary source of morality as well.

For example for a social species such as ours, it is beneficial for our survival if we can be accepted into the social group or tribe or pack or whatever. And so a mechanism has evolved in our brains that make us feel good when we do altruistic acts and feel bad when we do things that that are detrimental to the group.

Traits for behaviors that are harmful to the group (such murder, or greed) will lead you to be excluded from the group and decrease your survival chances. And traits for behaviors that are beneficial to the group (such as sharing food, or looking after someone) will make you more accepted into the group, raising your survival chances of yourself and the group and increasing your chances of passing on your good morality genes you could say. You know what I mean?

Bur if the Christian doesn't believe in evolution in the first place then this answer isn't going to be much good.