When we come to examine the idea of force, we find that there is only one form in which we get any direct knowledge of it, only one place in which we come into contact with it, and that is, in our own conscious experiences, in the efforts of our own will. According to the scientific rule, always to interpret the unknown by the known, not the known by the unknown, it is only the rational conclusion that force elsewhere is also will. Through this personal experience of energy, we get, just once, an inside view of the universal energy, and we find it to be spiritual; the will-force of the Infinite Spirit dwelling in all things. That the encircling force of the universe can best be understood through the analogy of our own sense of effort, and therefore is a form of will, of Spirit, is a conclusion endorsed by the most eminent men of science,--Huxley, Herschel, Carpenter, and Le Conte. There is, therefore, no real efficient force but Spirit. The various energies of nature are but different forms or special currents of this Omnipresent Divine Power; the laws of nature, but the wise and regular habits of this active Divine will; physical phenomena but projections of God's thought on the screen of space; and Evolution but the slow, gradual unrolling of the panorama on the great stage of time. In geology and paleontology, as is admitted, Evolution is not directly observed, but only inferred. The process is too slow; the stage too grand for direct observation. There is one field and only one where it has been directly observed. This is in the case of domestic animals and plants under man's charge. Now as here, where alone we see Evolution going on, it is under the guidance of superintending mind, it is a justifiable inference that in nature, also, it goes on under similar intelligent guidance. Now, it is the observation of distinguished men of science that we see precisely such guidance in nature. There is nothing in the Darwinian theory, as I said, that would conduct species upward rather than downward. To account for the steady upward progress we must resort to a higher Cause. We must say with Asa Gray, "Variation has been led along certain beneficial lines, like a stream along definite and useful lines of irrigation." We must say with Prof. Owen, "A purposive route of development and change, of correlation and inter-dependence, manifesting intelligent will, is as determinable in the succession of races as in the development and organization of the individual. Generations do not vary accidentally in any and every direction, but in pre-ordained, definite, and correlated courses." This judgment is one which Prof. Carpenter has also substantially agreed with, declaring that the history of Evolution is that of a consistent advance along definite lines of progress, and can only be explained as the work of a mind in nature.