In the 1990s Mr Ryan was a speechwriter for Jack Kemp, the effervescent Congressman who, in the late 1970s and early 1980s, made supply-sideeconomics a centrepiece of Republican electoral ambitions.
He was a tireless advocate of supply-sideeconomics: the man who persuaded Ronald Reagan to abandon deficit-hawk Republicanism in favour of aggressive tax cuts.
他是供给学派的积极倡导者：他说服了罗纳德·里根放弃赤字的鹰派共和而支持积极减税。
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Supply-sideeconomics, though, is only one piece of Mr Ryan's intellectual furniture.