"Go not                            to the Elves for counsel,
 for they                            will say both no and yes.
 Elves seldom                            give unguarded advice,
 for advice                            is a dangerous gift,
 even from                            the wise to the wise,
 and all                            courses may run ill."

 "But what                            would you?"

 "You have                            not told me all concerning yourself;
 and how                            then shall I choose better than you?"

 [Gildor says                            this in response to Frodo]
 -J. R.                            R. Tolkien, The Lord of the Rings