First, he was primarily a scientist, not a philosopher. Second, his theories are for the most part still very much dominant and accepted as true in his field - not just some overall insights and direction (as with Freud) - but the actual details. Modern biology very much believes in and is based on Darwin's theories. It's remarkable how right he still is after all this time.
Darwin seems very out of place there.
First, he was primarily a scientist, not a philosopher. Second, his theories are for the most part still very much dominant and accepted as true in his field - not just some overall insights and direction (as with Freud) - but the actual details. Modern biology very much believes in and is based on Darwin's theories. It's remarkable how right he still is after all this time.