"The whole, though it be long, stands almost complete and finished in my mind so that I can survey it at a glance. Nor do I hear in my imagination the parts successively, but I hear them, as it were, all at once. What delight this is I cannot tell!"

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A scientist can hardly meet with anything more undesirable than to have the foundations give way just as the work is finished. I was put in this position by a letter from Mr. Bertrand Russell when the work was nearly through the press.

— Gottlob Frege