“An image of thought called philosophy has been formed historically and it effectively stops people from thinking.”

Source: Knowledge and Human Interests, 1971, p. 4

The Usurpation Of Language (1910)
Context: Philosophy has been called the search for the Permanent amid the changing. With this account of philosophy there is no need to quarrel. But having accepted it, a distinction remains to be observed, a distinction of capital importance, which we are in constant danger of forgetting. It is one thing to find the Permanent; it is another thing to find a form of words in which the Permanent shall stand permanently expressed. It is one thing to experience something fixed and changeless; it is another thing to fix this something by a changeless definition. The first may be possible, while the second remains impossible for ever.

Scènes de la vie future (1930), p. 52

Source: 1850s, An Investigation of the Laws of Thought (1854), p. 50

Source: Factfulness: Ten Reasons We're Wrong About the World and Why Things Are Better Than You Think

Preface
A Course of Lectures on Natural Philosophy and the Mechanical Arts (1807)

Source: Biographia Literaria (1817), Ch. XV

The Architecture of Theories (1891)
Context: Of the fifty or hundred systems of philosophy that have been advanced at different times of the world's history, perhaps the larger number have been, not so much results of historical evolution, as happy thoughts which have accidently occurred to their authors. An idea which has been found interesting and fruitful has been adopted, developed, and forced to yield explanations of all sorts of phenomena. … The remaining systems of philosophy have been of the nature of reforms, sometimes amounting to radical revolutions, suggested by certain difficulties which have been found to beset systems previouslv in vogue; and such ought certainly to be in large part the motive of any new theory. … When a man is about to build a house, what a power of thinking he has to do, before he can safely break ground! With what pains he has to excogitate the precise wants that are to be supplied. What a study to ascertain the most available and suitable materials, to determine the mode of construction to which those materials are best adapted, and to answer a hundred such questions! Now without riding the metaphor too far, I think we may safely say that the studies preliminary to the construction of a great theory should be at least as deliberate and thorough as those that are preliminary to the building of a dwelling-house.

Interview (23 September 1966), published posthumously in Der Spiegel (31 May 1976), as translated by Maria P. Alter and John D. Caputo in The Heidegger Controversy : A Critical Reader (1991), edited by Richard Wolin.
Context: Philosophy will not be able to effect an immediate transformation of the present condition of the world. This is not only true of philosophy, but of all merely human thought and endeavor. Only a god can save us. The sole possibility that is left for us is to prepare a sort of readiness, through thinking and poeticizing, for the appearance of the god or for the absence of the god in the time of foundering [Untergang] for in the face of the god who is absent, we founder. Only a God Can Save Us.