O

A circle is the oddest thing,
It's round as round is round.
As definite as real is not,
No start is to be found.

Its symmetry can't be ignored,
Whichever way you look.
It outlines holes and clocks and rings,
And pennies that you took.

It's old as time and long as life,
A never-ending bend.
A ceaseless chase around the earth,
Adventures to no end.