What are the arguments concerning human nature?

I think the best and brightest of people were those more closely ociated with nature,,,it is rarely overlooked. Nature does not require philosophy...it is it's own mechanism. We set ourselves outside of nature by using our own ideas to mimic the miracles. Human nature...is it past, present, or future? Do we carry the ability to let natural instinct prevail all the time? Personally I think our ability to reason is the closest thing to actual nature that we will ever get.