Fair exchange is no robbery

The proverbial saying ‘fair exchange is no robbery’ is first found in a place we might expect to find it, that is, an early and comprehensive collection of English proverbs. There are a few of such but, in this case, it is John Heywood’s 1546 glossary A Dialogue conteinyng the nomber in effect of all the Prouerbes in the Englishe tongue:

Though chaunge be no robbry for the changed case.

Apart from what it means and where it originated, there’s not a great deal more to be said about this proverb.

See also: the List of Proverbs.