We should not be content to say that power has a need for such-and-such a discovery, such-and-such a form of knowledge, but we should add that the exercise of power itself creates and causes to emerge new objects of knowledge and accumulates new bodies of information. ... The exercise of power perpetually creates knowledge and, conversely, knowledge constantly induces effects of power. ... It is not possible for power to be exercised without knowledge, it is impossible for knowledge not to engender power.