But the higher we ascend the more the difficulties increase, until in the Commander-in-Chief they reach their climax, so that with him almost everything must be left to genius.
Further, according to a division of the subject in AGREEMENT WITH ITS NATURE, the difficulties are not everywhere the same, but diminish the more results manifest themselves in the material world, and increase the more they pass into the moral, and become motives which influence the will.

Therefore it is easier to determine, by theoretical rules, the order and conduct of a battle, than the use to be made of the battle itself.

Yonder physical weapons clash with each other, and although mind is not wanting therein, matter must have its rights.

But in the effects to be produced by battles when the material results become motives, we have only to do with the moral nature.

In a word, it is easier to make a theory for TACTICS than for STRATEGY.
27.