Late at e'en, drinkin'the wine, And ere they paid the lawin', They set a combat them between, To fight it at the dawin'. 'O stayat hame, my noble lord, O stay at hame, my marrow! My cruel brother will you betray On the dowie houms o' Yarrow!'

-Ballads
'The Dowie Houms o' Yarrow'.

When lovely woman stoops to folly And finds too late that men betray, What charm can soothe her melancholy, What art can wash her guilt away?

-Goldsmith, Oliver
  The Vicar of  Wakefield, ch.29.

To betray, you must first belong.

-Philby, Kim
  In the SundayTimes,17 Dec.

Birds feed on birds, beasts on each other prey, But savage man alone does man betray.

-Rochester,JohnWilmot, 2nd Earl of
  'A SatyrAgainst Mankind', l.129^30 (published1679).

I who have cursed The drunken officer of British rule, how choose Between this Africa and the English tongue I love? Betray them both, or give back what they give? How can I face such slaughter and be cool? How can I turn from Africa and live?

-Walcott, Derek Alton
  In a Green Night,'A Far Cry from Africa'.