Admitting that men differ from each other, not in kind, but in degree, the question arises, Are all men capable of an equal degree of development? This may best be answered by comparison. All men are alike in the general conformation of their bodies; all have the same number of physical organs, designed for the same purposes. The relative power of these organs is, however, very different in different individuals. One has a fine muscular frame, and delights in exercises of physical strength, while effort of the brain is a weariness to him. Another has a finely developed brain, and delights in intellectual labor, while his strength of muscle is hardly sufficient for the absolute needs of life. One has the digestion of an ostrich, while another lives only by painful abstinence; and so on with indefinite variety. We know that much may be done by well-directed effort to overcome the weaknesses and imperfections of the body; but still there is a limit to this, and all men cannot be strong and healthy alike. So it is with the powers of the mind. All men have the same number of powers,--this constitutes their humanity; but the relative force of their development varies in each individual. We know that a determined will works wonders in overcoming the defects of the body, and it can do more in overcoming the defects of the mind, because the spiritual body of man is far more docile and flexible to the will than the natural body; but there must be limitations here likewise: still, progress is eternal, and no man can tell beforehand of how much he is capable.