The stars are dead. The animals will not look: We are left alone with our day, and the time is short, and History to the defeated May say Alas but cannot help nor pardon.

-Auden,W(ystan) H(ugh)
  Spain.

Forgiveness to the injured does belong; But they ne'er pardon, who have done the wrong.

-Dryden,John
  The Conquest of Granada, pt.2, act1, sc.2.

Lord, make me an instrument of Your peace. Where there is hatred, let me sow love; Where there is injury, pardon; Where there is doubt, faith; Where there is despair, hope; Where there is darkness, light; Where there is sadness, joy. O divine Master, grant that I may not so much seek To be consoled as to console; To be understood as to understand; To be loved as to love. For it is in giving that we receive; It is in pardoning that we are pardoned; And it is in dying that we are born to eternal life.

-Franklin, Benjamin
Attributed prayer, traditionally known as the'Prayer of St Francis'.

   Pardon me boy is that the Chattanooga Choo-choo, Track twenty nine, Boy you can give me a shine.

-Gordon, Mack
  Song 'Chattanooga Choo Choo', featured in Sun Valley Serenade (music by Harry Warren).

Sleep; and if life was bitter to thee, pardon, If sweet, give thanks; thou hast no more to live; And to give thanks isgood, and to forgive.

-Swinburne, Algernon Charles
  Poems and Ballads (2nd edn),'AveAtqueVale', stanza17.