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

The question that motivates my research is, if we can put a man on the Moon with 100,000 [people], what can we do with 100 million?

My ultimate research goal is to transform our human existence to just eating, sleeping, drinking, playing - nevermind.

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

People are good at figuring out what's attractive, and computers are good at quickly searching and finding. You put them together, and bang!

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.

One fact we're particularly proud of is that there are more people learning languages on Duolingo in the US than there are people learning languages in the entire US public school system.

Because education is such a broad area, I chose to focus on language learning.

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

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

I finished reading High Output Management by Andrew Grove, which had such valuable insights for leaders that I've been forcing managers at Duolingo to read the book.

There are worse ways to die than warm and drunk.

If you just watch a teenager, you see a lot of uncertainty.

When a man becomes a writer, I think he takes on a sacred obligation to produce beauty and enlightenment and comfort at top speed.

I think the hardest part of being a working mom is that I miss my kids a lot.

If we don't take the necessary measures, famine will be the scandal of this century.

Slash sat me down at his house and said, You've got to clean up your act. You know you've gone too far when Slash is saying, Look, you've got to get into rehab.

My colleague Ross Douthat wrote that any time you give Donald Trump the benefit of the doubt, he always lets you down.

He took a deep, shuddering breath. "Okay. I said it, it's out there. And I am fine now. So let's move on, shall we? What's the plan?

Every man heals himself.

You create your reality according to your beliefs and expectations, therefore you should examine these carefully. If you do not like some aspect of your world, then examine your own expectations.