Morphy soon gave up chess, but his law practice was disrupted by the American Civil War (1861–1865). He was opposed to secession, and did not serve in the Confederate Army. Morphy traveled to Havana and to Paris, where he had a married sister, but refused invitations to play in public. His law practice never took off, and he never worked or played chess again. The last years of his life were marred by mental illness bordering on paranoia. He suffered from distrust, obsessions and delusions, and showed erratic behavior. For example, he thought people were trying to poison him, so he only ate food cooked by his mother or sister. If he saw a woman in the street that he thought looked nice, he would follow her for hours.