You know you’re passionate about what you do when you’re willing to do it for free. For me, however, volunteering is about much more than just passion. Offering my time and talents outside of work helps me stretch myself and grow in ways I never could have imagined. It’s like the expression by Oliver Wendell Holmes, Jr., “A mind once stretched by a new idea never regains its original dimension.” I think that applies to our talents, as well.