"Forty! He was not young any longer. Life no longer stretched before him as a vast uncharted field, its horizon lost in the distance. He had been on Trantor for eight years and the time had passed quickly. Another eight years and he would be nearly fifty. Old age would be looming. And he had not even made a decent beginning in psychohistory!" (Part 1, Eto Demerzel, Chapter 2, pg. 12.)

"Demerzel said, 'I do not expect the technique to have been perfected, but you may have some sketch, some skeleton, some principle that you can use as guidance. Imperfectly, perhaps, but better than mere guesswork.'
'No more than I had eight years ago,' said Seldon mournfully'" (Part 1, Eto Demerzel, Chapter 12, pg. 63.)

"Joranum turned to Namarti with a gesture of eager approval. 'Do you hear that, G.D.? "I'm a human being. I don't want no robot in charge...