[In] the realm of science, ... what we have achieved will be obsolete in ten, twenty or fifty years. That is the fate, indeed, that is the very meaning of scientific work. ... Every scientific "fulfillment" raises new "questions" and cries out to be surpassed rendered obsolete. Everyone who wishes to serve science has to resign himself to this.
Max Weber, David S. Owen, Tracy B. Strong (2004). “The Vocation Lectures”, p.11, Hackett Publishing