Part 1 — 203.
Paul V. (Paul Victor) Cohn translation
The Moment before Solution.—In science it occurs every day and every hour that a man, immediately before the solution, remains stuck, being convinced that his efforts have been entirely in vain—like one who, in untying a noose, hesitates at the moment when it is nearest to coming loose, because at that very moment it looks most like a knot.