The easiest defence of faith made by religious people is that religion and science are in different realms - so proving anything said (e.g. god exists) does not require "scientific" evidence.  You can talk about experiences and the feeling of god's love and other non-provable non-evidence then use that to prove that, for you, god exists.  This is of course total nonsense.  But if you find yourself arguing with someone who is clever with words, you may not be able to shoot them down immediately.

This kind of argument is particularly likely to be used when a theist (e.g. Rabbi David Wolpe) is trying to win a point with a top scientist (e.g. Sam Harris).  But Sam did better than I would have done - I would have needed a few hours to think it over.  Reminds me of the time a well meaning friend was using logical arguments as to why I should not leave my (first) wife!  I knew he was wrong but didn't know why.  Much later I figured it out but many people can't bring to mind a good counter argument when faced with what seems like a good rational argument.

The subject of morality has occupied much human thinking over the ages. What makes an act moral or immoral? How can we know the difference between right and wrong? Or even if there is such a thing a right or wrong?

The humanist position is that right and wrong are matters of human perception. That which makes us happy or contributes to our welfare and well-being is good. That which does otherwise is bad. This is very simplistic thinking, but in the long run, within the constraints of our respective cultures, it's what we all go by.

For example, a Muslim man may feel that it is morally necessary to kill a female member of his family, perhaps a daughter because she has offended the family honour by accepting a boyfriend of which the family does not approve. Infidels, meaning non-Muslims, may find the idea horrific. Yet the Christian Bible also instructs parents to kill their disobedient children.

Too many politicians want us to respect other cultures but the implicit assumption is that all cultures respect human rights.  While it is true that many individuals do respect human rights this is not true of their culture. While most  Muslims are quite ethical and care about other people, even those in other faiths, this is not true of their culture.  That is, it’s not true of the official version of their religion as spelled out by their holy book, the Qur'an, and it’s not true as preached by a large number of their holy imams.  In particular, Sharia law does not respect the rights of women and has no place in our society.

Ayaan Hirsi Ali is a tireless advocate of these points and continually slams Islam for having no respect for  the rights of  women.  Although some Muslim countries like Indonesia, Malaysia and Turkey have secular governments, fundamentalist Muslims are working to reduce the fragile separation of Mosque and State that exists there.