In spite of occasional disagreements, Morny's influence with the emperor remained great, and the liberal policies which he advocated enabled him to serve the imperial cause through his influence with the leaders of the opposition, the most conspicuous of whom, Émile Ollivier, was detached from his colleagues by Morny's efforts. But while he was laying the foundations of the "Liberal Empire" his health deteriorated and was further injured by quack medicines. The emperor and the empress visited him just before his death in Paris on 10 March 1865.