Hum, interesting. I guess I always thought it was his because he actually developed very similar ideas in his essay "In Praise of Idleness"[1]. [1] http://www.

Hum, interesting. I guess I always thought it was his because he actually developed very similar ideas in his essay "In Praise of Idleness"[1]. [1] http://www.zpub.com/notes/idle.html http://www.zpub.com/notes/idle.html