Müller-Brockmann in Three Posters
Beethoven, 1955. Concentric arcs, nothing else. The poster does not depict music; it behaves like it. Crescendo as geometry.
Der Film, 1960. Type overlapping type, projector-light white on black. The grid is there — you just cannot catch it standing still.
Schützt das Kind!, 1953. A motorcycle the size of fear itself bearing down on a child. Proof that the cool Swiss hand could also grab you by the collar.
Three posters, one lesson: restraint is not the absence of emotion. It is emotion, aimed.
The longer argument: grid-as-a-promise.