“I know you know, and you know that I know that you know. It spirals on from there, so let's just assume the dot dot dot.”

“I taught you everything you know. But I didn't teach you everything I know.”

“I know everything I need to know already," Rigg always said... To which Father always replied,"See how ignorant you are? You don't even know why you need to know the things you don't know yet." "So tell me," said Rigg. "I would but you're too ignorant to understand the reasons why your ignorance is a fatal disease...”

“When you really know somebody you can’t hate them. Or maybe it’s just that you can’t really know them until you stop hating them.”

“He was always just mad enough to take treaties seriously. Honor, you know. I don't have any.”

“I don't know what's going on in the world," he said. "Everything seemed so reasonable and scientific until I discovered my son was a fraud with the ability to hide my own memories from me. And now you come along. The captain at the gate told me you were executed and buried yesterday.""He spoke to you? He didn't say a word to me," I said."Don't change the subject, young man. I'm accusing you of violating the laws of nature.""Nature's virtue is intact. I just know some different laws.”

“nobody ever wrote to me saying"you know ender's game was a pretty good book, but you know what it really needs a n introduction!".....so be assured the novel stands on its own, and if you skip this intro and go straight to the story, i not only won't stand in your way i'll even agree with you!”