I'm learning scheme, and I came upon this wonderful chunk of code:

(define is-even?
(lambda (n)
(if (= n 0) #t
(is-odd? (- n 1)))))

(define is-odd?
(lambda (n)
(if (= n 0) #f
(is-even? (- n 1)))))

A language that doesn’t affect the way you think about programming is not worth knowing.
– Alan Perlis

I was always one for being alone,
Seeking in my own way, eternal purpose;
At the edge of the field waiting for the pure moment;
Standing, silent, on sandy beaches or walking along green embankments;
Knowing the sinuousness of small waters:
As a chip or shell, floating lazily with a slow current...
-Theodore Roethke 

The Shapes of Leaves
by Arthur Sze
Ginkgo, cottonwood, pin oak, sweet gum, tulip tree: our emotions resemble leaves and alive to their shapes we are nourished. Have you felt the expanse and contours of grief along the edges of a big Norway maple? Have you winced at the orange flare searing the curves of a curling dogwood? I have seen from the air logged islands, each with a network of branching gravel roads, and felt a moment of pure anger, aspen gold. I have seen sandhill cranes moving in an open field, a single white whooping crane in the flock. And I have traveled along the contours of leaves that have no name. Here where the air is wet and the light is cool, I feel what others are thinking and do not speak, I know pleasure in the veins of a sugar maple, I am living at the edge of a new leaf.

teach me, stream,
to polish haiku,
before spring
sends them down the
mountain giggling

robert d. wilson