Spirit,
You state: "And why does our brain works by those rules? Because we can understand nature by those rules. If we had in our brain a different logic, we could not have survived in nature. So the reason for the logic rules in our brain is not the Bible, its just evolution."
It is a significant philosophical problem to have the laws of logic arising from evolution. The law of identity would prohibit any change for example. This would also mean that the laws of logic are contingent or only possible to occur. Also that they may evolve into something else. This is all ridiculous nonsense.
Plus good philosophers have destroyed the expectation of the future to be like the past (See Hume and Russell) on atheistic principles, so the laws of logic might change in the next 5 minutes. This puts no difference between lunacy and logic.