“Who indeed will set bounds to human ingenuity? Who will assert that everything in the universe capable of being perceived is already discovered and known?”

“Each person is at each moment capable of remembering all that has ever happened to him and of perceiving everything that is happening everywhere in the universe.”

“There are two insults which no human being will endure: The assertion that he hasn't a sense of humor, and the doubly impertinent assertion that he has never known trouble.”

“Who is more humble? The scientist who looks at the universe with an open mind and accepts whatever the universe has to teach us, or somebody who says everything in this book must be considered the literal truth and never mind the fallibility of all the human beings involved?”

“human beings do not perceive things whole; we are not gods but wounded creatures, cracked lenses, capable only of fractured perceptions”

“Money is human happiness in the abstract; and so the man who is no longer capable of enjoying such happiness in the concrete, sets his whole heart on money.”