BTW I can't believe nobody has mentioned the quotes from Churchill. In their simplicity they're quite fun. Here they are (perhaps slightly incorrectly quoted):

Never in the history of warfare have so many had so few to thank for so much.
- About the British fighter pilots during the Blitz

This is not the end, not even the beginning of the end, but perhaps this is the end of the beginning
- At the time of operation overlord, I think