Do you mean Metternich, the Austrian diplomat that was central to the Congress of Vienna and established the Congress of Europe as a reaction to both Napoleon and the Revolution?

The idea of a European permanent peace could be framed as a radical return to pax romanum. Instead of all states constantly vying for absolute expansion, relative power became important.

But again that's only a radical return to a much more previous state. He is the epitome of the conservative movement and the designer of 19th century history for a reason.