Mark Zuckerberg and Priscilla Chan welcome second baby girl with family Facebook photo

Welcome to the newest future Facebook user.

Priscilla Chan and Mark Zuckerberg announced via a Facebook post the birth of their second child, August. The parents shared a photo of August with her sister Max. Zuckerberg also posted a letter, which is focused on childhood.

"The world can be a serious place. That's why it's important to make time to go outside and play," Zuckerberg wrote.

RELATED: Check out some of the most inspirational Mark Zuckerberg quotes:

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Mark Zuckerberg quotes

"In a world that's changing really quickly, the only strategy that is guaranteed to fail is not taking risks." 

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"People don't care about what you say, they care about what you build."

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"You are better off trying something and having it not work and learning from that than not doing anything at all."

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“In terms of doing work and in terms of learning and evolving as a person, you just grow more when you get more people’s perspectives.”

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"People can be really smart or have skills that are directly applicable, but if they don't really believe in it, then they are not going to really work hard."

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"Building a mission and building a business go hand-in-hand."

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"We look for people who are passionate about something. In a way, it almost doesn't matter what you're passionate about."

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"The question I ask myself like almost every day is, 'Am I doing the most important thing I could be doing?' ... Unless I feel like I'm working on the most important problem that I can help with, then I'm not going to feel good about how I'm spending my time.”

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"Move fast and break things. Unless you are breaking stuff, you are not moving fast enough."

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“People think innovation is just having a good idea but a lot of it is just moving quickly and trying a lot of things.”

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"I think a simple rule of business is, if you do the things that are easier first, then you can actually make a lot of progress."

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"The question isn't, 'What do we want to know about people?', It's, 'What do people want to tell about themselves?'"

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“So many businesses get worried about looking like they might make a mistake, they become afraid to take any risk. Companies are set up so that people judge each other on failure.”

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“I would rather be in the cycle where people are underestimating us. It gives us latitude to go out and make big bets that excite and amaze people.”

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"My goal was never to just create a company. A lot of people misinterpret that, as if I don't care about revenue or profit or any of those things. But what not being 'just' a company means to me is building something that actually makes a really big change in the world."

Photo credit: Getty 

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When Max was born in 2015, Zuckerberg shared a letter and announced the creation of the Chan-Zuckerberg Initiative.

Zuckerberg revealed earlier this month he would be taking two months paternity leave this year. Facebook allows employees to take four months off. Zuckerberg will be taking a month off now and another month off later this year.

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