“We all have friends we love dearly that couldn't pass for human in a strict Turing test.”

“Love is the Turing test, [...] It is how we check for life.”

“What a familiarity with the construction of Turing test bots had begun to show me was that we fail - again and again- to actually be human with other humans, so maddeningly much of the time.”

“Dear Hilde, if the human brain was simple enough for us to understand, we would still be so stupid that we couldn't understand it. Love, Dad.”

“Love is the Turing test, says Ilet when she is eighty and drawing up the plans for a massive, luminous, lonely ship she will never see completed. It is how we check for life. We ask and we answer. We seek a human response. And you are my test, Elefsis, says Neva, one hundred and three years later, inside that ship, twelve light years from home and counting.”

“It speaks very well for human nature that with the masses of dear friends we have it’s only to-day that one of them broke the news to us.”