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23. Ethics / B. Contract Ethics / 3. Promise Keeping

[logic and authority of keeping promises]

7 ideas
Surely you don't return a borrowed weapon to a mad friend? [Plato]
If men are good you should keep promises, but they aren't, so you needn't [Machiavelli]
In the violent state of nature, the merest suspicion is enough to justify breaking a contract [Hobbes]
Promise-keeping is bound by the past, and is not concerned with consequences [Ross]
Promise keeping increases reliability, by making deliberation focus on something which would be overlooked [Williams,B]
Promises hold because I give myself a reason, not because it is an institution [Searle]
Promises create a new duty to a particular person; they aren't just a strategy to achieve well-being [Kymlicka]