Living, as I do, in an educated and scientific atmosphere, I could not have conceived that the first principles of zoology were so little known. Is it possible that you do not know the elementary fact in comparative anatomy, that the wing of a bird is really the forearm, while the wing of a bat consists of three elongated fingers with membranes between?
Arthur Conan DoyleWell, I'm a bacteriologist, you know. I live in a nine-hundred-diameter microscope. I can hardly claim to take serious notice of anything that I can see with my naked eye.
Arthur Conan DoyleMy sister and I, you will recollect, were twins, and you know how subtle are the links which bind two souls which are so closely allied.
Arthur Conan Doyle