But some of us still believe that, without freedom, human beings cannot become fully human and that freedom is therefore supremely valuable.

-Huxley, Aldous Leonard
  'Brave New World Revisited', in Esquire.

We must recollect†what it is we have at stake, what it is we have to contend for. It is for our property, it is for our liberty, it is for our independence, nay for our existence as a nation; it is for our character, it is for our very name as Englishmen, it is for everything dear and valuable to man on this side of the grave.

-Pitt,William known as  theYounger
  Speech, 22 Jul, on the breaking of the Peace of Amiens and the resumption of the war with Napoleon. Quoted in Speeches of the Rt. Hon.William Pitt (1806), vol.4.

I have yet to hear the first syllable of valuable or even earnest advice from my seniors.

-Thoreau, Henry David
  Walden, or, Life in theWoods,'Economy'.