Definition.com
Moral philosophy is a branch of philosophy that concerns itself with clarifying the everyday intuitions into which we are socialized (and as such, must be able to adopt the attitude of any lay person).
Meme.com

Definition.com
Moral philosophy is responsible for setting the background for, and boundaries of, political philosophy. What persons may and may not do to one another limits what they may do through the apparatus of a state, or do to establish such an apparatus.
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