Philosophy is to be studied, not for the sake of any definite answers to its questions since no definite answers can, as a rule, be known to be true, but rather for the sake of the questions themselves; because these questions enlarge our conception of what is possible, enrich our intellectual imagination and diminish the dogmatic assurance which closes the mind against speculation; but above all because, through the greatness of the universe which philosophy contemplates, the mind also is rendered great, and becomes capable of that union with the universe which constitutes its highest good.
Bertrand Russell, The Problems of Philosophy
But I doubt if any of the other tasks which I would like to see the philosophers fulfill will be enough to satisfy some people who raise this objection. They want philosophy to be grand, to yield one important, nonempirical information which will help one to solve either the world's problems or one's personal problems, or both. To them I feel inclined to reply in the end: “You are crying for the moon; philosophy has never really fulfilled this task, though it may sometimes have appeared to do so (and the practical consequences of its appearing to do so have not always been very agreeable). It is no more sensible to complain that philosophy is no longer capable of solving practical problems than it is to complain that the study of the stars no longer enables one to predict the course of world events.”
Paul Grice (1958) Postwar Oxford Philosophy