No law of progress applied to it.

没有适用于它的进步法则。

To evolutionists may be left the processes of evolution; to historians the single interest is the law of reaction between force and force — between mind and nature — the law of progress.

进化论者可能会留给进化过程；对历史学家来说，唯一的兴趣是力与力之间——思想与自然之间——进步的规律。