He perhaps first during the middle ages taught the transformation of lower into higher organisms, following the Greeks who first enunciated the doctrine of evolution, which it remained for Darwin and Wallace to edit and illustrate as that law of the organic continuity of life, which we call _evolution_. He further wrote of the human hand as a factor in the evolution of the human race, in a way which should have commended him to the author of the Bridgewater treatise. He wrote of the changes on the earth's surface brought about by natural processes, which have changed not only the external configuration of the same but the fate and destiny of nations; of the identity of matter throughout the universe; of the universal movement of matter. Long before Lessing he showed how myths may contain the germs of great truths, and should be regarded as indications thereof. In this way, he told us, the Bible was to be regarded, holding its more or less historical statements to be quite subordinate to its moral teachings. When we realize how to such highly developed reasoning powers as Bruno possessed, were added a phenomenal memory, a tremendous power of assimilation, a developed imagination, a poetic nature, the gift of easy and accurate speech and a temperament easily excited to fervor in attack or defense, we may the better appreciate his dominating greatness as well as his trifling weakness; the former being entirely to his own credit while the latter are ascribed largely to the faults of his time, and the fact that he was really living far ahead of his day and generation. He was not only the forerunner of modern science, he was the prototype of the modern biblical critic, foreshadowing the modern higher criticism, albeit in veiled terms, and as a matter of esoteric teaching; because the biblical critic of those days was burned at the stake, while to-day he is barely ostracized by the shallow and narrow minded, with whom he has at best nothing mentally in common. So much have four centuries of labor and vicarious suffering accomplished for the emancipation of the human mind.