Let's tackle this from a different angle. Are humans born knowing a language? Do we come out of the womb speaking English?
No, we don't. We come out of the womb with 1) the capacity to learn and 2) a set of developmental triggers that prompt us to acquire language at a very early stage. But we don't already know language.
It is the same angle I am coming from. The 'capacity' is the 'genetic imprint' and without it we wouldn't be able to develop - in the case of your example, the ability to learn and use language.
I am saying the same thing in regards to 'knowing' good from evil...the 'capacity' is there already - we are born with it...without it we wouldn't develop abilities in relation to these. Good or evil abilities...one evil ability is to justify an evil action as being good...(as in the case of the firewood being stolen because it helps the thief survive).
Like our complex language, our ability to know good from evil makes us different from other critters.
One argument I read recently went along the lines that evolution is about competition. This is not the case. Plainly we can see that plants and animals cooperate together - this ensures the best chance for survival of all. The critters might not
know this but they have a 'knowing' about it which transcends language...and is seen in the action.
We know at least that some animals are intelligent - and we know this by their behavior.
We tend to look at behaviors of plants as being 'automated' which is to say - it appears intelligent but isn't - at least not according to the ones observing it and making that call.
It can be seen that the overall process is cooperation among species in relation to survival. There is no one species that is competing to be the only species - the 'one that survives over all the others because it 'stole all the wood.' so to speak.
There is no necessity to justify 'how to survive' because the process is more automated - still intelligent - but no need for committees and what have you.
The human is different but still the same - unavoidably part of the same process.
It is in the difference where the problems come to the fore. The human has the instinctive ability to know good from evil and can point to a spider trapping a fly and say 'therein is not evil.' and explain adequately why that is the case. No justification necessary. It is nature.
The argument from some in this subject in this thread is that the same applies to human behavior. "It is nature - it is natural'.
However, this argument is based on the belief that natural selection is all about competition for resource.
As far as I can tell this belief has more to do with 'Great Chain of Being' Pup mentioned earlier on in the thread . Competing for resources is unnatural - cooperating in relation to resources is natural. It is nature - it is natural.
The ability to inherently know good and evil is therefore recognizable in other species - and has been mentioned in this thread. Humans call it 'good' or 'evil' and it is about keeping the balance of the survival impulse...not upsetting the balance.
Keeping the balance - that is 'good' Upsetting the balance - that is 'evil'.
Humans appear to have wandered away from the balance and confused themselves with evil intent dressed up as good. They justify their actions as 'good' in relation to the other humans (regarded as expendable for reasons such as race, politics, religion, culture, gender, etc...) and compete for resource...
The argument that it is all natural and that we don't know any better and are simply following the demands of evolution, trying to survive etc et al are simply smoke screens which enable justification of horrific acts done in the name of 'good'.
Therefore the argument is evil because it promotes evil thinking which in turn promotes evil action.
The more natural way (following the example of nature) is cooperation. The wood be thief can survive by cooperating with his otherwise intended victim in relation to gathering wood and growing food etc...there is no justification for the thief to
steal the wood saying that he had no choice because he had to 'survive'.
We all some of us know the act is evil.