What the smartest people do on the weekend is what everyone else will do during the week in ten years
cdixon.org/2013/03/02/what-the-smartest-people-do-on-the-weekend-is-what-everyone-else-will-do-during-the-week-in-ten-years
From the page
Saved with the link. Notes from 2007 to 2016 are mostly the page's own words, so this is probably an excerpt.
Business people vote with their dollars, and are mostly trying to create near-term financial returns. Engineers vote with their time, and are mostly trying to invent interesting new things. Hobbies are what the smartest people spend their time on when they arent constrained by near-term financial goals.