Deterrent effects would fall under "things present and to come". If you expect some kind of future benefit from a retaliatory act, that's one thing. On the other hand, if you seek vengeance because you're outraged that someone would dare wrong you, then you're mentally living in the past.
Deterrent effects would fall under "things present and to come".
Fair enough, but there's also a sense in which deterrence is acausal. In order to make a truly credible threat of retaliation for defection, you have to be completely willing to follow through with the retaliation if they defect, even if, after the defection, following through does not seem to have any future benefits.
Another month, another rationality quotes thread. The rules are: