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===Theory of Human Sexuality===[[Freud]]'s concept of the [[drive]] (''[[Trieb]]'') is central to his theory of [[human]] [[sexuality]]; it lies at the heart of his theory of [[sexuality]].

====Instinct and Drive====For [[Freud]], the distinctive feature of [[human]] [[sexuality]] -- as opposed to the sexual life of other animals -- is that it is not regulated by any [[instinct]] -- a concept which implies a relatively fixed and innate relationship to an [[object ]] -- but by the [[drive]]s -- which differ from [[instinct]]s in that they are extremely variable, and develop in ways which are contingent on the life history of the [[subject]].