The original “Keep Calm and Carry On” poster (originally produced in 1939) is a powerful use of typography. It conveys confidence and is more “active” than regular old text on a page. Lately, we’ve seen a lot of funny takes on this poster – but now it’s old.

FROM WIKIPEDIA:
Keep Calm and Carry On was a poster produced by the Government of the United Kingdom in 1939 during the beginning of theSecond World War, intended to raise the morale of the British public in the event of invasion. It had only limited distribution, so was little known. The poster was rediscovered in 2000 and has been re-issued by a number of private companies, and used as the decorative theme for a range of products. There were only two known surviving examples of the poster outside government archives until a collection of 15 originals was brought in to the Antiques Roadshow in 2012 by the daughter of an ex-Royal Observer Corps member.