* This states that our ^^moral rules should be capable of being universal^^
* They should be rules that could apply to everyone regardless of the situation
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* Kant emphasises this formula bc he believes that we are ^^highly rational beings^^ and are able to ^^discover universal and absolute moral law^^
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* e.g. death penalty, ^^if we allow animals to be executed^^, then according to the FULN, we should ^^allow everyone to be able to kill each other^^
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* This breaks the FULN as if everyone is killed, there would be no one left in the world, and ^^no one to use reason and fulfil duty^^