The process is the same. The first actor was a savage. And so the drama grew, little by little, stage by stage. It is made up of the facts of life, not creations. It took centuries to develop the Greek drama.
Men observe and combine, that is all.
So does a rat. He observes a smell, he infers a cheese, he seeks and finds. The astronomer is very proud of his achievement, the rat is proud of his. They are entitled to no honors, no praises, no monuments when they die, no remembrance. One is a complex and elaborate machine, the other a simple and limited machine, but they are alike in principle, function, and process, and neither of them works otherwise than automatically, and neither of them may righteously claim a personal superiority or a personal dignity above the other.