(Note: To start the slideshow, click the image at left or the words “Continue reading,” below. If it moves too fast, you can click the “pause” button at the bottom and advance it one slide at a time with the right-facing arrow.)

If by some chance all this excites you, you can create your own “Keep Calm and” online poster at keepcalmandposters.com or keepcalm-o-matic.co.uk. Both sites let you order actual paper versions of your work; at keep-calm-o-matic, you can also get a t-shirt, a mug, a keychain, or an iPhone 5 case.

At this point, “Keep Calm and” is everywhere. It cannot be escaped. That is all. Carry on.