Elevation of soul, this is to be desired for the laborer as for every human being; and what does this mean? The phrase, I am aware, is vague, and often serves for mere declamation. Let me strive to convey some precise ideas of it; and in doing this, I can use no language which will save the hearer from the necessity of thought. The subject is a spiritual one. It carries us into the depths of our own nature, and I can say nothing about it worth saying, without tasking your powers of attention, without demanding some mental toil. I know that these lectures are meant for entertainment rather than mental labor; but, as I have told you, I have great faith in labor, and I feel that I cannot be more useful than in exciting the hearer to some vigorous action of mind. Elevation of soul, in what does this consist? Without aiming at philosophical exactness, I shall convey a sufficiently precise idea of it, by saying that it consists, first, in force of thought exerted for the acquisition of truth; secondly, in force of pure and generous feeling; thirdly, in force of moral purpose. Each of these topics needs a lecture for its development. I must confine myself to the first; from which, however, you may learn in a measure my views of the other two.--Before entering on this topic, let me offer one preliminary remark. To every man who would rise in dignity as a man, be he rich or poor, ignorant or instructed, there is one essential condition, one effort, one purpose, without which not a step can be taken. He must resolutely purpose and labor to free himself from whatever he knows to be wrong in his motives and life. He who habitually allows himself in any known crime or wrong-doing, effectually bars his progress towards a higher intellectual and moral life. On this point every man should deal honestly with himself. If he will not listen to his conscience, rebuking him for violations of plain duty, let him not dream of self-elevation. The foundation is wanting. He will build, if at all, in sand.