his scientific contributions can be compared favorably to those of such figures as Isaac Newton and Albert Einstein . Darwin himself wrote about this, in his autobiographical "Recollections of the Development of my Mind and Character" (1876): Notes References American Psychological Association Answers to Your Questions About Panic Disorder Bradbury, Andrew, J – Charles Darwin – The Truth? – Father to the Man – Of Father Figures – In Sickness and In Ill Health Carolyn Douglas – Changing Theories of Darwin's Illness AboutDarwin.com (The Autobiography of Charles Darwin) Desmond, A. and Moore, J. Darwin: The Life of a Tormented Evolutionist. NY: Warner Books, 1991. Circumnavigating Darwin – A paper by Dr Robert Gordon and Deborah Thomas Queendom.com : Mental Health Articles: Panic Disorder and Agoraphobia – Etiology of panic disorder External links Douglas, C. Changing Theories of Darwin's Illness, Purdue University. The Origin of Darwin's Anxiety. ScienceNow, 8 January 1997. Darwin Illness. The Talk.Origins Archive. Refutation to Claim no. CA131 of creationists that Darwin's illness was caused by feeling guilt of his "sins". Chagas Disease Claimed an Eminent Victim. The New York Times'', 15 June 1989. Illness Health by individual History of psychiatry Retrospective diagnosis