Apple pioneer brings emotion to Google+

But Hertzfeld said the most formative lesson he learned from Wozniak and Jobs, who he remained close to until Jobs' death last fall, was to bring emotion and art to computer design.

"First and foremost, you are your own customer: You build stuff that you love yourself. What Woz did with the Apple II was he just filled it up with so much love -- love because it was his lifelong dream," Hertzfeld said. "That's the basic approach I learned, to work from your heart, and to really, really care."