Depends on how you read this. It is one of the most powerful speeches ever delivered in English. It is often quoted. I would say that almost every sentence is the main point and that 's not really what you want to hear.
The main point is that Churchill was trying to rouse the people to fight a war against an enemy that was well equipped (or better equipped than England when this speech was delivered), ruthless, well indoctrinated and very cunning. Every sentence points to either an evil enemy or the need to oppose this enemy by any means that Britain could muster. His aim was to assure the British people that nothing less than victory would do. He could not offer them anything in engaging in this war except his own blood sweat toil and tears.