Thank you for your answer Emily=)
What is sacred, valuable or moral can change over time. If there is something that will never be separated from ethical boundaries, what characteristic of it is it? Would something necessarily remain ethical even if the duration of human history was much longer than it is now?
It wouldn't surprise me if the real answer is 'no' because life is full of uncertainty and change. If the answer is 'yes', it makes me feel meaningful and purposeful. maybe it would still seem silly to me even if I knew the real thing =). It's fun to think intertemporal and ask questions. If you have different questions, I look forward to your sharing.