The Ten Commandments are well known:
Whereas most people probably would think of most of these as fairly sensible rules, they are definitely not always in line with the unwritten moral rules in our society. The first six are definitely not seen as very important, and there are some exceptions to the last six; for instance, euthanasia is defended by many people, and swinger-clubs are widely seen as a personal choice, not a mortal sin.
On the other hand, there are many rules that people in Western countries actually try to adhere to (or feel bad if they don’t), although they’re not on the old list. For instance:
There are probably many more like this. Can anybody here think of any?