I looked for that which is not, nor can be,
  And hope deferred made my heart sick in truth
  But years must pass before a hope of youth
    Is resigned utterly.

I watched and waited with a steadfast will:
  And though the object seemed to flee away
  That I so longed for, ever day by day
    I watched and waited still.

Sometimes I said: This thing shall be no more;
  My expectation wearies and shall cease;
  I will resign it now and be at peace:
    Yet never gave it o’er.

Sometimes I said: It is an empty name
  I long for; to a name why should I give
  The peace of all the days I have to live?—
    Yet gave it all the same.

Alas, thou foolish one! alike unfit
  For healthy joy and salutary pain:
  Thou knowest the chase useless, and again
    Turnest to follow it.

- Christina Rossetti, "A Pause of Thought"