The objects referred to by class D are those which greatly or even suddenly exceed expectation, whence, as has been hinted before, the signification of our concept frequently approaches that of an expletive. Let us see what physiological mechanisms provide this shade of meaning. It is generally realized that not only do our successes and failures, our disappointments and satisfactions attune our neuro-muscular mechanism to respond to the typical or normal thing by calling it “good,” but these same successes and failures may also whet our appetite for things which, by exceeding the average, shall make up for those experiences which have been especially disappointing. All normal protoplasm is insatiable for the maximum success. And hunger of any sort, physiologically speaking, may be described as a condition in which the motor mechanism is activated to greater efforts than usual in order to relieve the condition of want. Consequently, the physiological implications of the concept “good” may be made as precise with respect to Class D as with any of the preceding classes. The action-patterns implied by this class are those which are exhibited by anyone when, after long privation, the tensions he has accumulated are suddenly relieved by the appearance of the desired stimulus. Indeed, such action-patterns may sometimes be described as rapacity, as is illustrated in the case of our crying out “Good!” when some misfortune has befallen a particularly annoying prig. The physiological implications of the term “good” as regards Class E have already been sufficiently hinted in our delineation of that class. Moreover, the surprise, shock, and spasm which it connotes prevent its having an important rôle to play in our judgments of value. Let us now sum up and condense these several points. From the foregoing it appears that he who uses the word “good” is at the same time exhibiting a certain specific motor attitude toward the environment which gives this word its meaning. As we have already shown, the action-pattern involves the following physiological conditions:—(1) the presence, maintenance, or even heightening of muscular tone, (2) the permeability of the synaptic membranes, especially of those along the motor pathways, (3) selective activity and selective excitability, and (4) normally, the nice coordination of the motor responses involved in overt action. This positively responsive condition of the organism may now be expressed in simpler words by saying that the word “good” is the sign of an _outgoing reaction_. That is to say, in the first place, the things we call “good” release the energy that is ready to be discharged; in the second place, we participate more fully in that environment which contains a “good” than in one that does not; and in the third place, the effect of the presence of continuously “good” stimuli is to render us more and more responsive, and to provide a wide margin of resiliency for our organic interior.