"Well, that is a valuable addition to the sum total of our knowledge. Our minds are now enriched by the thought that a…"

"“It’s your right to refuse to believe. That’s freedom, isn’t it?” “Up to a point. A man has duties. He’s no right to …"

"Time—the older you get the faster it goes."

"“I was thinking,” Harrison explained. “I approve of that,” put in His Excellency. He lugged a couple of huge tomes ou…"

"Any chance of accidentally dropping our cargo of bureaucrats overboard on the way back? A misfortune like that might …"

"“Anyway, one soon loses appreciation of the value of something gained for nothing, one becomes bored by getting it fo…"

"Appearances aren’t always what they seem."

"Fander tried to explain the alien in non-alien terms. It proved impossible."

"I give up. I cannot argue with someone who casts aside the accepted rules of logic and invents ones of his own."

"“What’s the matter with you? Got a bellyache or something?” “No, sir. I’ve been thinking.” “Does it hurt that much?”"