But this does not deny the existence of differences between these groups of phenomena; neither does it assert that we can describe the characteristic features of one group in terms that belong to another group. Once a group of phenomena, biological, or chemical is there, we must have special formulae to describe them, otherwise there would be no need for these divisions. It is admitted that the earth was at one time destitute of life; it is also admitted that there are forms of life destitute of those features which we call mind. And, whatever be their mode of origin, once introduced they must be dealt with in special terms. Psychological facts must be expressed in terms of psychology, biological facts in terms of biology, and chemical facts in terms of chemistry. You may give the chemical and physical equivalent of a sunset. That is one aspect. You may also give the psychological explanation of the emotion of man on beholding it. That is another aspect. But you cannot express the psychological fact in terms of chemistry because it belongs to quite another category. A psychological fact, as such, is ultimate. So is a chemical or a biological fact. If by analysis you reduce the psychological fact to its chemical and biological equivalents, its character as a psychological fact is destroyed. That is the product of the synthesis, and to seek in analysis for what only exists in synthesis, is surely to altogether misunderstand the spirit of scientific method. The curious thing is that a mere layman should have to correct men of science on this matter. We can now return to Prof. Thomson's attempt to claim for religion a special place in the sphere of emotion. He claims, in the passage already cited, that "as the great mathematicians and metaphysicians represent the aristocracy of human intellect so the great religious geniuses represent the aristocracy of human emotion." There is nothing new in this claim, neither is there any evidence of its truth. Coleridge's dictum that the proper antithesis to religion is poetry is open to serious objection, but there is more to be said for it than may be said for the antithesis set up by Prof. Thomson. As a matter of fact, religious geniuses have often pursued their work with as much attention to scientific precision as was possible, and have prided themselves that they made no appeal to mere emotion. Justification by emotion has only been attempted when other means of securing conviction has failed. And the appeal to emotion has become popular for very obvious reasons. It enables the ordinary theologian to feel a comfortable superiority over a Spencer or a Darwin. It enables mediocrities to enjoy the feeling of being wise without the trouble of acquiring wisdom. It enables inherited prejudices to rank as reasoned convictions. And, in addition, there is nothing that cannot be conveniently proved or disproved by such a method.