By my count, this was Asimov’s fourth foray into time travel, but his first as Dr. Asimov. In the story, the dead Elmer Tywood also had a Ph.D. and a plan to translate a modern chemistry textbook into Greek before sending it back in time to inaugurate a Golden Age of science long before it actually occurred.
There was a short silence, then he said: “I’ll tell you. Why don’t you check with his students?”

I lifted my eyebrows: “You mean in his classes?”

He seemed annoyed: “No, for Heaven’s sake. His research students! His doctoral candidates!”

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  1. “The Red Queen’s Race” by Isaac Asimov, in Astounding Science Fiction, January 1949.
    2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . written by Isaac Asimov