Barth on astronomy?

After a sermon in a parish church where Barth had been preaching one Sunday, he was met at the door by a man who greeted him with these words, "Professor Barth, thank you for our sermon. I'm an astronomer, you know, and as far as I am concerned, the whole of Christianity can be summed up by saying, `Do unto others as you would have others do unto you.' Barth replied: "Well I am just a humble theologian and as far as I am concerned the whole of astronomy can be summed up by saying, `Twinkle , twinkle little star, how I wonder what you are.' "

John D. Godsey, Reminiscences of Karl Barth.