Astraddle an ever expanding saddle

Our eyes prefer to suppose
That a habitable place
Has a geocentric view,
That architects enclose
A quiet Euclidian space:
Exploded myths - but who
Could feel at home astraddle
An ever expanding saddle?
-From W. H. Auden's After Reading a Child's Guide to Modern Physics

Very cool. The saddle, if you are unaware, is one of the possible shapes of space (see a fun NASA factcard).