I worked on a number of projects that were used by millions of people and that also served as inspiration to what we now call "crowd-sourcing."

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

I co-founded Duolingo with the mission of bringing free language education to the world.

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.

In 2011, after spending a couple of years working at Google, I decided that I wanted to dedicate myself to helping to transform education. I was particularly inspired by my upbringing in Guatemala, a poor country where high-quality educational opportunities are limited to those who have money.

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

Every time you buy tickets on Ticketmaster, you help to digitize a book.