If people do not believe that mathematics is simple, it is only because they do not realize how complicated life is.
--John von Neumann
"As far as the laws of mathematics refer to reality, they are not certain; and as far as they are certain, they do not refer to reality."
The most exciting phrase to hear in science, the one that heralds new discoveries, is not "Eureka!" (I found it!) but "That's funny ..."
"What makes the universe so hard to comprehend is that there's nothing to compare it with."
"The opposite of a profound truth may well be another profound truth."
"The only possible conclusion the social sciences can draw is: some do, some don't."
"All science is either physics or stamp collecting."
"Interestingly, according to modern astronomers, space is finite. This is a very comforting thought - particularly for people who cannot remember where they left things."
"The scientific theory I like best is that the rings of Saturn are composed entirely of lost airline luggage."