  There are no absolute morals.   If you don't know the
difference, moral absolutism is the view that certain actions
are always right or wrong (ex. lying is always wrong).  If your
objection is that societies tend to have the same morals, it's
really only because morals are there as a way to make sure we
don't end up doing things that are detrimental to our survival,
so it's only logical that most societies will share much of the
same morals. However, this doesn't mean that these morals are
absolute. As well, just take a look at the differences in
morality between the societies and you'll see how there cannot
be moral absolutes.  Let's take murder as an example. In the
ancient Aztec society, people (those captured from enemy tribes
and those from their own tribes who volunteered) were commonly
sacrificed for various reasons. Therefor, it's easy to say that
to the Aztecs, murder is okay if it's sacrificial. However, try
doing that today, and you won't convince any judges or juries.
In most modern societies, s