The doctrine that a particular mental phenomenon, such as motivation or justification, has an internal rather than external basis(noun)
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Use "internalism" in a sentence
"The first of these, often referred to as internalism, holds that reasons for action must be grounded in an agent's prior motivations"
"The classic case for this kind of internalism in the contemporary literature is made by Bernard Williams in his 1980 paper “Internal and External Reasons”."
"The Long Shot uses short, sharp, direct sentences that hit you like a flurry of unending jabs that effectively strikes a perfect balance between external action and internalism."