Later today, four US states hold presidential primaries that could see Barack Obama take a decisive step towards winning the Democratic nomination.
One of the controversies in the campaign so far has been an allegation that Mr Obama plagiarised part of a speech by Deval Patrick, the governor of Massachusetts.
Leaving aside the argument about plagiarism, it's fascinating to look at the section of the speech that sparked the controversy. Responding to the charge that his campaign was about words rather than substance, Mr Obama declared:
"Don't tell me words don't matter. 'I have a dream' — just words? 'We hold these truths to be self-evident, that all men are created equal' — just words? 'We have nothing to fear but fear itself' — just words? Just speeches?"
Here at Language is Everything — where we're often asked about our name — it's a sentiment we can agree with entirely.