With decades of profound knowledge of football theory, Parreira was already fully familiar with Mourinho's ideas.

BBC: At what point is a game of football won and lost?

Professor Williams made profound contributions to moral theory, most effectively in his critique of utilitarianism.

ECONOMIST: Bernard Williams

That said, the logic of the disposable-soma theory is profound.

ECONOMIST: Abolishing ageing

Fine in theory, but many African governments argued that such profound change could only be made by governments that did not have to face angry voters at the polls.

ECONOMIST: The rulers, the ruled and the African reality

It bears noting that externality theory in economics includes both negatives and positives: supplying energy permits untold and profound benefits.

FORBES: Steve Forbes Is Wrong

Leftist financier George Soros has recently promulgated the idea that free market economic theory, that of Friederich Hayek in particular, suffers from a deep and profound contradiction.

FORBES: Why John Maynard Keynes Was A Keynesian