Locke therefore assumes that uneasinesses can be ranked in order of intensity or strength, and that among all the uneasinesses importuning an agent, the one that ordinarily determines her will is the one that exerts the greatest pressure on her mind.  The picture with which Locke appears to be working is of a mind that is the playground of various forces of varying strengths exerting different degrees of influence on the will, where the will is determined by the strongest of those forces.