February 10, 1853.--This afternoon I made an excursion to the Salève with my particular friends, Charles Heim, Edmond Scherer, Élie Lecoultre, and Ernest Naville. The conversation was of the most interesting kind, and prevented us from noticing the deep mud which hindered our walking. It was especially Scherer, Naville, and I who kept it alive. Liberty in God, the essence of Christianity, new publications in philosophy, these were our three subjects of conversation. The principle result for me was an excellent exercise in dialectic and in argumentation with solid champions. If I learned nothing, many of my ideas gained new confirmation, and I was able to penetrate more deeply into the minds of my friends. I am much nearer to Scherer than to Naville, but from him also I am in some degree separated. It is a striking fact, not unlike the changing of swords in “Hamlet,” that the abstract minds, those which move from ideas to facts, are always fighting on behalf of concrete reality; while the concrete minds, which move from facts to ideas, are generally the champions of abstract notions. Each pretends to that over which he has least power; each aims instinctively at what he himself lacks. It is an unconscious protest against the incompleteness of each separate nature. We all tend toward that which we possess least of, and our point of arrival is essentially different from our point of departure. The promised land is the land where one is not. The most intellectual of natures adopts an ethical theory of mind; the most moral of natures has an intellectual theory of morals. This reflection was brought home to me in the course of our three or four hours’ discussion. Nothing is more hidden from us than the illusion which lives with us day by day, and our greatest illusion is to believe that we are what we think ourselves to be. The mathematical intelligence and the historical intelligence (the two classes of intelligences) can never understand each other. When they succeed in doing so as to words, they differ as to the things which the words mean. At the bottom of every discussion of detail between them reappears the problem of the origin of ideas. If the problem is not present to them, there is confusion; if it is present to them, there is separation. They only agree as to the goal--truth; but never as to the road, the method, and the criterion. Heim represented the impartiality of consciousness, Naville the morality of consciousness, Lecoultre the religion of consciousness, Scherer the intelligence of consciousness, and I the consciousness of consciousness. A common ground, but differing individualities. _Discrimen ingeniorum_.