• Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.

    Thomas A. Edison: Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.
    "Geek mythology and Nikola Tesla" by Rebekah Higgitt, www.theguardian.com. August 20, 2012.