translation.en: SP: Still, I have become convinced that reason is a better angel for the moral progress our species has enjoyed and that holds out the greatest hope for continuing moral progress in the future.
translation.zh: 史迪芬： 不过，我还是相信 理性是一个更好的天使 它在我们人类享受过去的道德进步 和对未来的进步 抱着大希望方面 有着最大的功劳。