This paper explores the development of the Elasticity Principle, first introduced by Ferenczi based upon his clinical observations. This important shift away from classical neutrality was inspired by Ferenczi's human approach to psychoanalysis. Learning from his analysands, he not only determined that in order to reduce resistances the analyst should present any interpretations in a tactful, empathetic manner, but also that the analytic work should bend or yield toward the analysand. The paper traces the evolution of the Elasticity Principle to The Grand Experiment, which was Ferenczi's analysis of Elizabeth Severn utilizing provision as an analytic tool. The paper follows the contemporary extensions of the Elasticity Principle in the development of Self Psychology and in the Relational perspective. A clinical example illuminates aspects of the Elasticity Principle in the work with a difficult analysand.