Abstract
Intention, intentional action, and the connections between them are central topics of the philosophy of action, a branch of the philosophy of mind. One who regards the subject matter of the philosophy of mind as having at its core some aspect of what lies between environmental input to beings with minds and behavioural output may be inclined to see the philosophy of action as concerned only with the output end of things. That would be a mistake. Many intentional actions depend for their development on the processing of input — both from the environment and from the body.