"In the wake of Pearl Harbor, a single word favored above all others by Americans as best characterizing the Japanese people was "treacherous," and for the duration of the war the surprise attack on the U.S. Pacific fleet remained the preeminent symbol of the enemy's inherent treachery. The attack also inspired a thirst for revenge among Americans that the Japanese, with their own racial blinders, had failed to anticipate. In one of his earliest presentations of the plan to attack Pearl Harbor, even Admiral Yamamoto Isoroku, who presumedly knew the American temperament firsthand from his years as a naval attache in Washington, expressed hope that shattering opening blow against the Pacific Fleet would render both the U.S. Navy and the American people "so dispirited that they will not be able to recover.""