"If, in common with men, animals and plants were created spiritually, it may not be an idle speculation that the lower forms of life will advance, in their respective fields, as man advances in his. However, a statement in the above quotation must not be overlooked, 'It remaineth in the sphere in which I, God, created it.' This would preclude any notion that by endless development a plant may become an animal, or that one of the lower classes of animals become a high animal, or a man. Is not this the place where, perhaps, the evolution of science has failed? All things advance, but each order of creation within its own sphere. There is no jumping from order to order. The limits of these orders are yet to be found."