>>5543104http://quotevadis.com/post/29835440998/hugh-macleod-the-price-of-being-a-sheep-is-boredomlink implies that it's the cartoonist.
I tend to disregard who writes the quotes, because I'm stupid and don't know most of these people, but also because I don't care and ain't got the time to care to know everyone.
op here,
/r/ing a good wallpaper with the quote "life begins at the end of your comfort zone" by Neale Donald Walsch, google has not much to offer.