To write well (that is, a good style), to speak well (as an orator, actor, or elocutionist), to sing well, it is, above all things, necessary that the performer's mind should be in a state of conformity with the situation which is to be described. His flow of thought, and consequent breathing and mode of expression, will then correspond with the scope, drift, and circumstance underlying his performance. Unless this is the case, the latter will be unsatisfactory, unimpressive, unsympathetic. To prove that for a satisfactory performance this _must_ be the case, it will but be necessary to call attention to the fact that under various emotions our mode of breathing undergoes great changes--as under fear, hate, jealousy, indignation, excitement, love, enthusiasm, benevolence, languor, apathy, etc. Our breathing under these different circumstances will, the same as the manner of our expression, undergo various stages of change as to time and measure, as well as to rhythm, emphasis and intonation. The character and rapidity of the flow of our blood is of the same order as our manner of breathing. It is, in fact, as I expect to prove later on, not only of the same order, but of the same origin and regulated by the same causes. The flow of the blood is not merely of a material order, but of a spiritual one as well. While it is acted upon by the mind it reacts upon the mind. The thought must be measured and restricted as to time, so as to enable it to make the proper impression and produce a corresponding expression _before_ another thought comes along crowding in upon the preceding one and in so doing _blurring_ the impression made by the latter before it had been given the time to be expressed. If the necessary time is not granted for an impression to be made and for the expression thereof to obliterate the same, the premature flow of another thought, coming on top of the first, will make a new impression over the previous one, causing confusion and making a clear expression a matter of impossibility. Unless our professor, while standing in front of his blackboard demonstrating before his class, has a sponge in his hand, and before again writing in the same place wipes out that which he had written before, the new writing will not be of such a nature that it can be understood. The slate endures; but the thought and the writing are always new. Yet, when such writing is of an _impressive_ nature, it is like that of a palimpsest; though apparently obliterated, its lines remain, and their meaning can be recalled to memory as often as the occasion may demand it.