This is a wall outside a school on the island of Formentera, in Spain. Obviously the values of the school are expressed with nonverbal graphics. Obviously the kids can get the message from the first day, long before they can read.
But this form of expression has many other advantages. It’s concise, takes little space, is immediately perceivable and it is “obvious”. But it also lets you speak about one thing while “reading” several symbols simultaneously. That is impossible with written words. And on top of that, they say that nonverbal symbols, pictures and photos communicate more directly with the larger part of the brain, beyond the limited and language oriented conscience. How cool isn’t that!