Book 3: The Will.
Chapter 3: We deliberate on what we can do—not on ends, but means.
Now, as to deliberation, do we deliberate about everything, and may anything whatever be matter for deliberation, or are there some things about which deliberation is impossible?
By “matter for deliberation” we should understand, I think, not what a fool or a maniac, but what a rational being would deliberate about.
Now, no one deliberates about eternal or unalterable things, e.g. the system of the heavenly bodies, or the incommensurability of the side and the diagonal of a square.
Again, no one deliberates about things which change, but always change in the same way (whether the cause of change be necessity, or nature, or any other agency), e.g. the solstices and the sunrise; nor about things that are quite irregular, like drought and wet; nor about matters of chance, like the finding of a treasure.
Again, even human affairs are not always matter of deliberation; e.g. what would be the best constitution for Scythia is a question that no Spartan would deliberate about.
The reason why we do not deliberate about these things is that none of them are things that we can ourselves effect.
But the things that we do deliberate about are matters of conduct that are within our control. And these are the only things that remain; for besides nature and necessity and chance, the only remaining cause of change is reason and human agency in general. Though we must add that men severally deliberate about what they can themselves do.
A further limitation is that where there is exact and absolute knowledge, there is no room for deliberation; e.g. writing: for there is no doubt how the letters should be formed.
We deliberate, then, about things that are brought about by our own agency, but not always in the same way; e.g. about medicine and money-making, and about navigation more than about gymnastic, inasmuch as it is not yet reduced to so perfect a system, and so on; but more about matters of art than matters of science, as there is more doubt about them.
Matters of deliberation, then, are matters in which there are rules that generally hold good, but in which the result cannot be predicted, i.e. in which there is an element of uncertainty. In important matters we call in advisers, distrusting our own powers of judgment.
It is not about ends, but about means that we deliberate. A physician does not deliberate whether he shall heal, nor an orator whether he shall persuade, nor a statesman whether he shall make a good system of laws, nor a man in any other profession about his end; but, having the proposed end in view, we consider how and by what means this end can be attained; and if it appear that it can be attained by various means, we further consider which is the easiest and best; but if it can only be attained by one means, we consider how it is to be attained by this means, and how this means itself is to be secured, and so on, until we come to the first link in the chain o