MIKE KRIEGER

With 100 million people, somebody is using your product in some interesting way. If you change it... you're going to break some use cases.

I grew up not liking coffee, even though I'm from Brazil. Then I realized when I moved to San Francisco that it's not that I don't like coffee, I just didn't like the coffee I'd had before. I fell in love with my morning cup of coffee, and my second one at 11 A.M., and so on and so forth.

My dad worked for different companies that made whiskey for a long time, so we were definitely whiskey drinkers. Growing up, my friends would get toy cars, and I would get swag from whisky companies.

Hearing 'no' a lot of times usually tells you either you're crazy or you're on the right track, and you don't know which one it is until you finally launch.

In high school, one of the things I loved doing was this after-school program where you would teach computer skills to some of the maintenance folks at school.

Just because you've Googled something doesn't mean you've learned.

When I came to the United States in 2004 to attend university at Stanford, I was instantly inspired by the stories and advice from startup leaders in Silicon Valley and beyond, who had endeavoured to create new opportunities and improve lives around the world.

People want to share their photos publicly with lots of people.

Computer vision and machine learning have really started to take off, but for most people, the whole idea of what is a computer seeing when it's looking at an image is relatively obscure.

The biggest problem is startups in search of a problem. Chase what you're passionate about; you'll probably already have knowledge in the space.

Software is like gardening - one day I'll go behind the shed and clean up. But if nobody ever goes there, does it matter a lot?

Focus on doing the right things instead of a bunch of things.

I think the biggest challenge over time is that we stay creative and making sure that we continue to launch awesome products that people love.

Innovation happens best when people of different backgrounds come together to solve the world's toughest challenges and, in the process, can create new jobs and opportunities. I'm hopeful that updated immigration policies will encourage entrepreneurs from around the world to help tackle these opportunities in the U.S.

Who I love reading is Jordan Mechner, who wrote 'Prince of Persia.' He put all his journals while he was writing 'Prince of Persia' online.

I love that our engineers are first and foremost 'Instagram' users.

Don't spend months building something without any idea if someone actually wants it.

In 2010, the night before we launched 'Instagram v1', my co-founder Kevin and I bet on how many people would download the app its first day in the wild.

Every year, thousands of startups are founded - not only in technology, but increasingly also in health care, education, and energy.

I was born in Sao Paulo, Brazil, and from an early age was interested in technology and engineering.

Doing the simple thing first doesn't mean your solution will work forever.

Working on a startup is a balancing act: being crazy enough to believe your idea can take off but not crazy enough to miss the signs when it's clearly not going to.

You have to tailor yourself to everybody. Sometimes people need a firmer hand; some people you can have a laugh with, and they concentrate more. What they needed was more certainty about the future of the company.

You can't start a product simply by building it. You have to know why you're building it, and you might go down the wrong rabbit hole, waste time, and confuse things. Spending long afternoons with a sketchbook or talking through your ideas with other people can save a year in software development later on.

I remember, when I was in college, an anonymous donor gave Stanford students a year of 'Yahoo Music Engine'.