Perpetual Motion Society
"There is something lamentable, degrading, and almost insane in pursuing the visionary schemes of past ages with dogged determination, in paths of learning which have been investigated by superior minds, and with which such adventurous persons are totally unacquainted. The history of Perpetual Motion is a history of the fool-hardiness of either half-learned, or totally ignorant persons."
Henry Dircks, Perpetuum Mobile: Or, A History of the Search for Self-motive (1861)
"Modern flywheels can have a zero-load rundown time measurable in years."
Kwok, James, "An energy storage device and method of use", published 2008