But with the teens all this begins to be changed and many of these precepts must be gradually reversed. There is an outburst of growth that needs a large part of the total kinetic energy of the body. There is a new interest in adults, a passion to be treated like one's elders, to make plans for the future, a new sensitiveness to adult praise or blame. The large muscles have their innings and there is a new clumsiness of body and mind. The blood-vessels expand and blushing is increased, new sensations and feelings arise, the imagination blossoms, love of nature is born, music is felt in a new, more inward way, fatigue comes easier and sooner; and if heredity and environment enable the individual to cross this bridge successfully there is sometimes almost a break of continuity, and a new being emerges. The drill methods of the preceding period must be slowly relaxed and new appeals made to freedom and interest. We can no longer coerce a break, but must lead and inspire if we would avoid arrest. Individuality must have a longer tether. Never is the power to appreciate so far ahead of the power to express, and never does understanding so outstrip ability to explain. Overaccuracy is atrophy. Both mental and moral acquisition sink at once too deep to be reproduced by examination without injury both to intellect and will. There is nothing in the environment to which the adolescent nature does not keenly respond. With pedagogic tact we can teach about everything we know that is really worth knowing; but if we amplify and morselize instead of giving great wholes, if we let the hammer that strikes the bell rest too long against it and deaden the sound, and if we wait before each methodic step till the pupil has reproduced all the last, we starve and retard the soul, which is now all insight and receptivity. Plasticity is at its maximum, utterance at its minimum. The inward traffic obstructs the outer currents. Boys especially are often dumb-bound, monophrastic, inarticulate, and semi-aphasic save in their own vigorous and inelegant way. Nature prompts to a modest reticence for which the deflowerers of all ephebic naiveté should have some respect. Deep interests arise which are almost as sacred as is the hour of visitation of the Holy Ghost to the religious teacher. The mind at times grows in leaps and bounds in a way that seems to defy the great enemy, fatigue; and yet when the teacher grows a little tiresome the pupil is tired in a moment. Thus we have the converse danger of forcing knowledge upon unwilling and unripe minds that have no love for it, which is in many ways psychologically akin to a nameless crime that in some parts of the country meets summary vengeance.