Morality

We humans are born emotional beings. It is ingrained in us from the very start.

We learn logic through sources such as schools and other external influences.

So where do we learn morality?

Is it instilled in our brains, mingling our perception of the world?

Or is it implemented into our minds from external sources that

It is the whole Nature V.S. Nurture question:

If we are simply born with it, why would there still be murderers, and rapists, and the like?

If we are nurtured into it, why would we feel a sense of wrongdoing if we do something bad before we are taught it is bad?

The other question is: where exactly does this sense of morality come from?

Who in the first place dictates what is right and what is wrong?