“Often-times it's madness, not genius that moves the world forward. Who else but the mad would reach so far, stretching for the impossible and, in so doing, prove the impossible possible!”

“So my antagonist said, "Is it impossible that there are flying saucers? Can you prove that it's impossible?" "No", I said, "I can't prove it's impossible. It's just very unlikely". At that he said, "You are very unscientific. If you can't prove it impossible then how can you say that it's unlikely?" But that is the way that is scientific. It is scientific only to say what is more likely and what less likely, and not to be proving all the time the possible and impossible.”

“All things are possible until they are proved impossible and even the impossible may only be so, as of now.”

“Ah," said the jailer, "do not always brood over what is impossible, or you will be mad in a fortnight.”

“It's possible to go on, no matter how impossible it seems, and that in time, the grief . . . lessens. It may not go away completely, but after a while it's not so overwhelming.”

“Men are so necessarily mad, that not to be mad would amount to another form of madness.”