What is the equitable maxim of ex turpi causa non oritur actio?

British Columbia, Canada


The following excerpt is from Craiggs v. Owens, 2012 BCSC 29 (CanLII):

This equitable maxim is related to the doctrine of ex turpi causa non oritur actio, which means that a person cannot found a claim or cause of action based on his own illegal or immoral acts: Norberg v. Wynrib, 1992 CanLII 65 (SCC), [1992] 2 S.C.R. 226 at 284.

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