A traumatic breech birth left him with a withered left arm due to Erb's Palsy, which he tried with some success to conceal. Recent analyses of records of his birth in the Imperial Archives have also suggested that he may have experienced some brain trauma, possibly leading to damage. Historians are divided on whether such a mental incapacity may have contributed to his frequently aggressive, tactless, headstrong, and occasionally bullying approach to problems and people, which was evident in both his personal and political life. Such an approach certainly marred German policy under his leadership, most notably in his dismissal of the cautious Otto von Bismarck. He also had a very poor relationship with his mother, who was always cold towards him and whose guilt over his deformity led her to try to "beat" it out of him through a regimen of rigorous exercise. He was accused of megalomania as early as 1894, by German pacifist Ludwig Quidde. Perhaps, this is the reason for the service being offered for Wilhelm I, already dead for 10 years.