Regimented minds cannot grasp the concept of confrontation as an open exchange of major differences with a view to settlement through genuine dialogue.

-Aung San Suu Kyi
  Freedom From Fear,'In Quest of Democracy'.

The exchange rate is onlya statistic, not a symbol of national honor and virility.

-Krugman, Paul R
  Quoted in the NewYork Times, 26  Jun.

   My true love hath my heart and I have his, By just exchange one for the other giv'n; I hold his dear, and mine he cannot miss, There never was a better bargain driv'n.

-Shute, Nevil originally Nevil Shute Norway
The Old Arcadia,'Third Eclogues'.

The word, it is to be observed, has two different meanings, and sometimes the utility of some particular object, and sometimes the power of purchasing other goods which the possession of that object conveys. This one may be called 'value in use'; the other,'value in exchange'. The things which have the greatest value in usehave frequently little or novalue in exchange; and on the contrary, those which have the greatest value in exchange have frequently little or no value in use. Nothing is more useful than water: but it will purchase scarce any thing; scarce any thing can be had in exchange for it. A diamond, on the contrary, has scarce any value in use; but a very great quantity of other goods may frequently be had in exchange for it.

-Smith, Adam
VALUE1776  An Inquiry into the Nature and Causes of theWealth of Nations, bk.1, ch.4.

Thisgoing into Europe will not turn out to be the thrilling mutual exchange supposed. It is more like nine middle- aged couples with failing marriages meeting in a darkened bedroom in a Brusselshotel fora group grope.

-Thompson, E P
  OnBritain's entry into the EEC, in the SundayTimes, 27 Apr.