Admiral Isoroku Yamamoto
"In the first six to twelve months of a war with the United States and Great Britain I will run wild and win victory upon victory. But then, if the war continues after that, I have no expectation of success."
"You cannot invade the mainland United States. There would be a rifle behind each blade of grass."
"I fear all we have done is awaken a sleeping giant and fill him with a terrible resolve." [upon learning of the success of the Japanese raid on Pearl Harbor]