Founding philosphical father of conservatism and classical liberalism. Transcending mere politics, clearly one of the radical [ie. root] thinkers of western civilization.
Good overview with links to original works and a wide range of other sources at PediaView.com.
Another attractive encyclopedic source on Burke and related subjects at Encyclopedia.com.
The Edmund Burke entry at LibertyFund.org.
A feast of nourishing quotes from one of the wisest of freedom’s champions at BrainyQuote.com.