But the best exponent of Republican isolationism is surely the televisually expert Pat Buchanan.
Amr Moussa, the secretary-general of the Arab League, is an arch-exponent of this conditioned response.
The greatest exponent of the niche approach, with more than 1m online subscribers, is the Wall Street Journal.
We were lucky to fall in with Kote Koubanishvilli, perhaps the county's leading exponent of this form of satirical, political wordplay.
Much depends on the administration's negotiating strategy, and in particular on Robert Rubin, the treasury secretary, who is its principal exponent.
But the actual increase in its atmospheric concentration is a low exponent.
Likewise, the great exponent of Capitalism and Freedom had suffered numerous betrayals of his principles by Republicans, including those he personally advised.
There is a style of cricket required to succeed in these conditions and New Zealand is not a great exponent of this style.
Another difference is pointed out by George Kelling, the Rutgers University academic who is the most influential exponent of the broken windows theory.
Mr Foot had a sense of humour and could be a devastating exponent of mockery, but he was above all a polemicist and muck-raker.
But though Mr Robinson is not, perhaps, Belfast's most popular politician, he is beyond doubt the ablest exponent of the Protestant and unionist cause.
As boxing legend Mohammed Ali demonstrated, dancing in the ring can help to win you fights and Calzaghe is an excellent exponent of the art.
For this he has been taken to task by Terry Eagleton, a professor of English at Oxford University and a leading exponent of politically committed criticism.
Warhol was a leading exponent of the pop art movement that flourished in the 1960s, with images of Marilyn Monroe, Elizabeth Taylor and Campbell's soup cans among his most famous works.
By far the most famous exponent was a bushy-haired Serbian named Borislav Milojkowic, who went by the stage name Borra, King of the Pickpockets, and became a star of night clubs and circuses throughout Europe.
Its greatest exponent is Yasuki Hiramatsu, born into a family of metalsmiths, who, through an annealing process, can twist a single length of gold or silver into a ring or necklace enchantingly resembling a minimalist bird's-nest.
He is an exponent of what might be thought of as a Slow Foot movement, asserting that a sort of virtue is forged in the discipline of wearing exquisite, handmade shoes, even if they cramp the metatarsals.
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