Book 1
10.10
Not but that it does happen that such and such moral habits are followed by such and such consequences; for it may be that from the outset the fact of being temperate produces in the temperate man good opinions and desires in the matter of pleasant things, in the intemperate man the contrary.
10.11
Therefore we must leave these distinctions on one side, but we must examine what are the usual consequences of certain conditions. For, if a man is fair or dark, tall or short, there is no rule that any such consequences should follow, but if he is young or old, just or unjust, it does make a difference. In a word, it will be necessary to take account of all the circumstances that make men's characters different; for instance, if a man fancies himself rich or poor, fortunate or unfortunate, it will make a difference. We will, however, discuss this laterBook 2.12-18.; let us now speak of what remains to be said here.
10.12
Things which are the result of chance are all those of which the cause is indefinite, those which happen without any end in view, and that neither always, nor generally, nor regularly. The definition of chance will make this clear.
10.13
Things which are the result of nature are all those of which the cause is in themselves and regular; for they turn out always, or generally, in the same way. As for those which happen contrary to nature there is no need to investigate minutely whether their occurrence is due to a certain force of nature or some other cause