All true histories contain instruction; though in some, the treasure may be hard to find, and when found, so trivial in quantity that the dry, shrivelled kernel scarcely compensates for the trouble of cracking the nut.

-Bronte«  , Anne
  Agnes Grey, ch.1.

The nuttis schell, thocht it be hard and teuch, Haldis the kirnell, sueit and delectabill; Sa lyis thair ane doctrine wyse aneuch And full of frute vnder ane fenyeit fabill.

-Henryson, Robert
c.1470  Moral Fables, prologue, l.15^19.

We're heading into nut country today.

-Kennedy,John F(itzgerald)
  Spoken to his wife in Fort  Worth a few hours before the assassination in Dallas. Quoted in William Manchester The Death of a President (1967).

BBC Radio is a never-never land of broadcasting, a safe haven from commercial considerations, a honey pot for every scholar and every hare-brained nut to stick a finger into.

-Safer, Morley
  In 60 Minutes, CBS TV broadcast,15 Sep.