What is the original keep calm saying?

Related questions

1. Who came up with Keep Calm?
2. Is telling someone to calm down rude?
3. Is keep calm and carry on trademarked?
4. What does calm girl mean?
5. What is the font for wanted posters?
6. Is the Keep Calm Crown copyright?
7. Why do I get mad easily?
8. What font is used for keep calm?
9. Why is keep calm and carry on popular?
10. What does the Bill Murray sticker mean?

Tags

1. #information
2. #reserved
3. #morale
4. #world
5. #government
6. #carry
7. #outset
8. #british
9. #effort
10. #original
11. #display
12. #boost
13. #phrase
14. #event
15. #invasion
16. #ministry
17. #third
18. #german
19. #course
20. #coined