fine excess

In Poetry I have a few axioms, and you will see how far I am from their centre. I think Poetry should surprise by a fine excess and not by singularity — it should strike the reader as a wording of his own highest thoughts, and appear almost a remembrance — Its touches of Beauty should never be halfway thereby making the reader breathless instead of content: the rise, the progress, the setting of imagery should like the Sun come natural to him — shine over him and set soberly although in magnificence leaving him in the luxury of twilight — but it is easier to think what Poetry should be than to write it — and this leads me on to another axiom. That if Poetry comes not as naturally as the leaves to a tree it had better not come at all.

—John Keats, letter to John Taylor (February 27, 1818)

form ever follows function

It is the pervading law of all things organic and inorganic, of all things physical and metaphysical, of all things human and all things superhuman, of all true manifestations of the head, of the heart, of the soul, that the life is recognizable in its expression, that form ever follows function. This is the law.

—Louis Sullivan, "The Tall Office Building Artistically Considered," Lippincott's Magazine (March 1896)