The bearing of truth is free from all doubt when the problem is, how to gain certain ends--how to be fed, how to get from one place to another, how to cure disease. A new case is presented by the choice of ends. The tyrannical French minister, when appealed to by a starving peasantry in the terms, "We must live," replied, "I do not see the necessity". There was here no question of true and false, no problem for science to solve. It was a question of ends, and could not be reargued. The only possible retort was to ask, "What does your Excellency consider a necessity?" If the reply were, "That I and my King may rule France and be happy," then might the starving wretches find some aid from a political scientist who could show that, in the order of nature, ruler and people must stand or fall together. So, it is no question of true or false in the order of nature, whether I shall adopt, as the end of life, my own gratification purely, the good of others purely, or part of both. In like manner the Benthamite, who propounds happiness as the general end of human society, cannot prove this, as Newton could prove that gravity follows the inverse square of the distance; nor can his position be impugned in the way that Newton impugned the vortices of Descartes, by showing that they were at variance with fact. There is a third case. Assertions are made out of the sphere of the sensible world, and beyond the reach of verification by the methods of science. There is a region of the supersensible or supernatural, where cause and effect may be affirmed and human interests involved, but where we cannot supply the same evidence or the same confutation as in sublunary knowledge. That all human beings shall have an existence after death is matter of truth or falsehood, but the evidence is of a kind that would not be adduced for proving that a caterpillar becomes a butterfly or that a seed turns to a plant. The reasoning employed, no doubt, makes references to facts of the order of nature; but it is circuitous and analogical, and is admitted merely because better cannot be had. [THREE DIFFERENT CLASSES OF ASSERTIONS.] The peculiarity of this last class of affirmations is that they give great room for the indulgence of our likings. So little being fixed with any precision, we can shape our beliefs to please ourselves. Even as regards the sensible world, we can sometimes accommodate our views to what we wish, as when we assume that our favourite foods and stimulants are wholesome; but such license soon meets with checks in the physical sphere, while there are no such checks in the realms of the superphysical.