 Science is about what is the case rather than what ought to be case. This seems to imply that science does not tell us what we ought to believe. The traditional way to fill the normative gap is to delegate issues of justification to epistemologists. However, Quine is uncomfortable with delegating such authority to philosophers. He prefers the thesis that psychology is enough to handle the issues traditionally addressed by epistemologists (or at least the issues still worth addressing in an Age of Science). This “naturalistic epistemology” seems to imply that ‘know’ and ‘justified’ are antiquated terms – as empty as ‘phlogiston’ or ‘soul’.