I usually make to-do lists with timelines, and pen and paper does the trick for me.

The current business model for language education is the student pays — in particular, the student pays Rosetta Stone $500. The problem with this business model is that 95 percent of the world’s population doesn’t have $500.

I am always able to keep a laser focus on one thing at a time without getting distracted. It helps that I try to break everything I do into small, achievable tasks.

I am an early riser, and always wake up between 5 and 6am.

[Captchas] are not only annoying, but they kill 10 seconds of your time.

It's hard to think of a time when I'm not working, but when that is the case, I like to travel and eat good food.

Together with my advisor, Manuel Blum, I co-invented CAPTCHAs, or computer-generated tests that humans are routinely able to pass but that computers have not mastered (they are the squiggly computer letters that are prevalent across the web).