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“Does it break my heart, of course, every moment of every day, into more pieces than my heart was made of, I never thought of myself as quiet, much less silent, I never thought about things at all, everything changed, the distance that wedged itself between me and my happiness wasn't the world, it wasn't the bombs and burning buildings, it was me, my thinking, the cancer of never letting go, is ignorance bliss, I don't know, but it's so painful to think, and tell me, what did thinking ever do for me, to what great place did thinking ever bring me? I think and think and think, I've thought myself out of happiness one million times, but never once into it.”
― Jonathan Safran Foer

“Every now and then a man's mind is stretched by a new idea or sensation, and never shrinks back to its former dimensions.”
― Oliver Wendell Holmes Sr., Autocrat of the Breakfast Table

“What ho!" I said.
"What ho!" said Motty.
"What ho! What ho!"
"What ho! What ho! What ho!"
After that it seemed rather difficult to go on with the conversation.”
― Wodehouse, My Man Jeeves

“It is forgetting, not remembering, that is the essence of what makes us human. To make sense of the world, we must filter it. "To think," Borges writes, "is to forget.”
― Joshua Foer, Moonwalking with Einstein: The Art and Science of Remembering Everything