tetrahedra

Green is the night, green kindled and appareled.
It is she that walks among astronomers.

She strides above the rabbit and the cat,
Like a noble figure, out of the sky,

Moving among the sleepers, the men,
Those that lie chanting *green is the night*.

Green is the night and out of madness woven,
The self-same madness of the astronomers

And of him that sees, beyond the astronomers,
The topaz rabbit and the emerald cat,

That sees above them, that sees rise up above them,
The noble figure, the essential shadow,

Moving and being, the image at its source,
The abstract, the archaic queen. Green is the night.

Wallace Stevens, "The candle a saint".