No idea who did this but I like it. Even if it is depressing.
"Ever great idea came out of work. Everything. If you sit around and wait for a bolt of lightening to hit you in the skull, you may never get a good idea."
I love this ad from Danish phone company, Telia. It's part of their 'Mere at sige ja til' campaign, which translates as something like 'More to say yes to'. 'Lad dig begrænse' translates as 'Don't limit yourself' (or something snappier).