It seems safe to look forward to the time when the conception of attractive and repulsive forces, having served its purpose as a useful piece of scientific scaffolding, will be replaced by the deduction of the phenomena known as attraction and repulsion, from the general laws of motion.
We are beginning to see now it is matter is the scaffolding of spirit; that the poet emerges from morphemes and phonemes; that as form in sculpture is the prisoner of the hard rock, so in everyday life it is the plain facts and natural happenings that conceal God and reveal him to us little by little under the mind's tooling.
Old houses were scaffolding onceand workmen whistling.t. e. hulme
We need heuristic reasoning when we construct a strict proof as we need scaffolding when we erect a building.george pólya