Hitler will forever be remembered for the outbreak of World War II, the most costly conflict in world history, thanks to his desire to expand Germany's borders by force. He will be equally remembered for his dreams of racial purity, which prompted him to order the execution of millions, perhaps as many as 11 million. Although every hand of the German bureaucracy was turned to executions, Hitler was the main driver.
In the decades since Hitler's death, many commentators have concluded that he must have been mentally ill and that, if he had not been when he began his reign, the pressures of his failed wars must have driven him insane. Given that he ordered genocide and was wounded and angry, it is easy to see why people came to this conclusion, but it is important to say that there is no consensus among historians that he is crazy or what psychological problems he may have .
