Ted, you said about ISIS:
Our revulsion is more than a gut-level reaction, of course–it’s based on a prior commitment to certain values that doesn’t look very negotiable to me, but (at the same time) doesn’t appear to be a necessary consequence of “science” or “reason”
Agreed, Ted, but ISIS correctly claims that they are just obeying their allegedly inspired Holy Book. They can’t be talked out of their position, because of this irrational belief. That’s the root of the problem–not ISIS, but irrational non-negotiable belief in the authority of an old book.
As you know, your own holy book makes those same statements. Unbelievers are to be stoned, people who violated religious laws are to be killed, your god ordered the taking of sex slaves and the massacres of entire nations, etc. At various times in your church’s history it has burned people alive, invaded other countries in “holy wars”, etc. Both Jesus and Mohammed also spoke of love and justice and mercy, but they left wiggle-room; some parts of the NT condone slavery, order believers to kill their own children or their parents for some offenses, etc. Some verses imply that Jesus still believed the OT and its laws.
Any claim that ethics are absolute and timeless and come from god is just false, if you accept the Bible as truly inspired. Western society has become more humane not because of their holy book but in spite of it; society has matured enough to reject more of the holy book than our ancestors rejected. That’s what we have to hope Muslims will do too…
A rational Kantian basis for ethics seems possible, and indeed the largely atheist northern European countries are by every measure healthier, happier, more just, and with less crime than deeply Christian countries like the US. I don’t claim that atheism is necessarily the cause of these things, but I do claim these countries disprove the thesis that society depends on religion for its ethics.