From: http://www.3quarksdaily.com/3quarksdaily/2011/06/a-crab-canon-for-douglas-hofstadter.html

读过《集异璧》的同学一定对里面的“卡农”印象深刻，这里有人又专门写了一首“卡农”的诗，窃以为更好。转过来欣赏一下。

SEASIDE CANON, for Douglas Hofstadter

by Julia Galef

~
The ocean was still.
In an empty sky, two gulls turned lazy arcs, and
their keening cries echoed
off the cliff and disappeared into the sea.
When the child, scrambling up the rocks, slipped
out of her parents’ reach,
they called to her. She was already
so high, but those distant peaks beyond —
they called to her. She was already
out of her parents’ reach
when the child, scrambling up the rocks, slipped
off the cliff and disappeared into the sea.
Their keening cries echoed
in an empty sky. Two gulls turned lazy arcs, and
the ocean was still.
~