Some important uses of the number four

 

Poster showing uses of the number four, and using four colors, four typefaces, four corners and four sides.

There are four freedoms in the First Amendment to the US Constitution; four fundamental forces, or interactions, holding the universe, you and me, and atoms and molecules together; four sides and four corners in many of the basic building blocks of buildings; four limbs in vertebrate animals, and, conventionally, four directions. There are more uses of four, or groups of four, that I have not thought of, no doubt.

Thanks for looking! I expect to post more of these posters in the future.