The spider holds a Silver Ball
In unperceived Hands--
And dancing softly to Himself
His Yarn of Pearl--unwinds--

He plies from Nought to Nought--
In unsubstantial Trade--
Supplants our Tapestries with His--
In half the period--

An Hour to rear supreme
His Continents of Light--
Then dangle from the Housewife's Broom--
His Boundaries--forgot--

Emily Dickinson

http://www.poemhunter.com/poem/the-spider-holds-a-silver-ball/