A re-post in response to Sidey’s challenge
Endless, Infinite, singular shape
known throughout ages that silently creep
Thousands of circles of pillars of stone,
shrouded in mystery, function unknown,
reflecting the roundness of the full moon,
or the sun at the dawn, or at sunset, or noon.
Imaginary Earth lines, circling the globe,
visioned as worn like an all covering robe.
Latitude lines, chiefly Equator,
Tropic of Capricorn, tropic of Cancer,
Longitude lines over all earth are found,
Marking the hours, as the earth turns around.
Geographers’ concepts, though simply ideas,
empower navigation by men of the seas.
Circles of air, stirred up in the heat,
catch up the debris and dust from the street,
whirl them around about, making them fly,
for children to chase while they laugh merrily.
Pulleys and wheels, all kinds of sizes,
and belts to take power to driven devices,
circles of steel, toothed round the rim,
can multiply force at the engineer’s whim.
And while the stone circles were being erected
Euclidic theorems were being projected.
Radius, diameter, segment and chord
were studied in ways we can only applaud,
with nothing to use but the power of the mind –
two-pi-R, pi-R-squared, and thoughts of that kind.
Crowning achievement, the wonderful wheel
made man’s mobility suddenly real.
Thanks be to God for the power to think
and to marshall our thoughts as they all interlink.