“One day, I shall come back — yes, I shall come back. Until then, there must be no regrets, no tears, no anxieties. Just go forward in all your beliefs, and prove to me that I am not mistaken in mine. Goodbye, Susan, goodbye, my dear.”

“The least important things, sometimes, my dear boy, lead to the greatest discoveries.”

“As we learn about each other, so we learn about ourselves.”

“You wanted advice you said. I never give it, never. But I might just say this to you. Always search for truth. My truth is in the stars and yours is here.”

“History sometimes gives us a terrible shock, and that is because we don’t quite fully understand. Why should we? After all, we’re too small to realize its final pattern. Therefore don’t try and judge it from where you stand.”

“Fear makes companions of all of us.”

“If you could touch the alien sand and hear the cries of strange birds and watch them wheel in another sky, would that satisfy you?”