Facebook bought WhatsApp one year ago today. Here are 11 inspiring quotes from its billionaire cofounders

SequoiaWhatsApp’s mantra.

Exactly a year ago today WhatsApp cofounders Jan Koum and Brian Acton became filthy rich when they sold the company to Facebook for $US19 billion five years after the app’s launch.

Koum and Acton met while working as Yahoo engineers. They are both part of the “Facebook reject club.” They hate advertising, and they feel strongly about having WhatsApp remain independent even though Facebook now owns it.

Koum moved to the US from communist Ukraine when he was 16. Acton was born in Michigan. Both are now billionaires.

Acton on advertising: 'Dealing with ads is depressing. You don't make anyone's life better by making advertisements work better.'

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Koum on focus: 'I want to do one thing, and do it well.'

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Koum on traditional SMS: 'It stinks. It's a dead technology like a fax machine left over from the seventies, sitting there as a cash cow for carriers.'

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Acton on Snapchat: 'It's not 100% clear to me what's working about Snapchat. Great, teenagers can use it to get laid all day long. I don't care. I'm 42, essentially married with a kid. I don't give a s--- about this.'

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Koum on his childhood: 'It was so run-down that our school didn't even have an inside bathroom. Imagine the Ukrainian winter, -20°C, where little kids have to stroll across the parking lot to use the bathroom. ...I didn't have a computer until I was 19 -- but I did have an abacus.'

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Koum on user privacy: 'We want to know as little about our users as possible. We don't know your name, your gender... We designed our system to be as anonymous as possible. We're not advertisement-driven so we don't need personal databases.'

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Koum on their no-nonsense style: 'Neither of us has an ability to bull----.'

Now, check out some quotes from FB's founder...

Words of wisdom from Mark Zuckerberg >>

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