Whenever a thing is done for the first time, it releases a little demon.

Quoted on the web sans source. Not in any published edition of Dickinson's poems. Anthony Hernandez, The Enlightened Savage (2006) – a self-help book – attributes it verbatim to Dave Sim sans source. Compare a similar quote sourced to Sim in Cerebus no. 65 (1984): "Anything done for the first time unleashes a demon."