In contrast to the knowledge that keeps man in a passive quietude, Desire dis-quiets him and moves him to action. Born of Desire, action tends to satisfy it, and can do so only by the 'negation,' the destruction or at least the transformation, of the desired object: to satisfy hunger, for example, the food must be destroyed or, in any case, transformed. Thus all action is 'negating'.
Alexandre KojeveThe man who works recognizes his own product in the world that has actually been transformed by his work. He recognizes himself in it, he sees his own human reality in it he discovers and reveals to others the objective reality of his humanity of the originally abstract and purely subjective idea he has of himself
Alexandre Kojeve