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Arthur Clarke says that I am first in science and second in science fiction in accordance with an agreement we have made. I say he is first in science fiction and second in science.

Isaac Asimov (1995). “Yours, Isaac Asimov: A Lifetime of Letters”, Doubleday Books
Arthur Clarke says that I am first in science and second in science fiction in accordance with an agreement we have made. I say he is first in science fiction and second in science.