What and How We Know
The Age of Reason Begins (Simon & Schuster: 1961), p. 575.
Religions are born and may die, but superstition is immortal. Only the fortunate can take life without mythology. Most of us suffer in body and soul, and Nature's subtlest anodyne is a dose of the supernatural. Even Kepler and Newton mingled their science with mythology: Kepler believed in witchcraft, and Newton wrote less on science than on the Apocalypse. ¶ Popular superstitions were beyond number. Our ears burn when others speak of us. Marriages made in May will turn out unhappily. Wounds can be cured by anointing the weapon with which they were inflicted. A corpse resumes bleeding in the presence of the murderer. Fairies, elves, hobgoblins, ghosts, witches, demons lurk everywhere. Certain talismans... guarantee good good fortune. Amulets can ward of wrinkles, impotence, the evil eye, the plague. A king's touch can cure scrofula. Numbers, minerals, plants, and animals have magic qualities and powers. Every event is a sign of God's pleasure or wrath, or of Satan's activity. Events can be foretold from the shape of the head or the lines of the hands. Health, strength, and sexual power vary with the waxing and waning of the moon. Moonshine can cause lunacy and cure warts. Comets presage disasters. The world is (every so often) coming to an end.
From "Things and Their Place in Theories"
Our talk of external things, our very notion of things, is just a conceptual apparatus that helps us to foresee and control the triggering of our sensory receptors in the light of previous triggering of our sensory receptors. The triggering, first and last, is all we have to go on. In saying this I too am talking of external things, namely, people and their nerve endings. Thus what I am saying applies in particular to what I am saying, and is not meant as skeptical. There is nothing we can be more confident of than external things — some of them, anyway — other people, sticks, stones. But there remains the fact — a fact of science itself — that science is a conceptual bridge of our own making, linking sensory stimulation to sensory stimulation; there is no extrasensory perception.
Willard V. Quine on Objectivity said...
Word and Object, 1964
The philosopher's task differs from the others', then, in detail; but in no such drastic way as those suppose who imagine for the philosopher a vantage point outside the conceptual scheme that he takes in charge. There is no such cosmic exile. He cannot study and revise the fundamental conceptual scheme of science and common sense without having some conceptual scheme, whether the same or another no less in need of philosophical scrutiny, in which to work. He can scrutinize and improve the system from within, appealing to coherence and simplicity; but this is the theoretician's method generally. He has recourse to semantic assent, but so has the scientist. And if the theoretical scientist in his remote way is bound to save the eventual connections with non-verbal stimulation, the philosopher in his remoter way is bound to save them too. True, no experiment may be expected to settle an ontological issue; but this is only because such issues are connected with surface irritations in such multifarious ways, through such a maze of intervening theory.