Twitter is the world.

Success is never accidental.

Life happens at intersections.

My goal is to simplify complexity.

As CEO, my main job is editor-in-chief.

Build what you want to see in the world.

Don't avoid eye contact and don't be late

Making something simple is very difficult.

It's really complex to make something simple.

Pick a movement, pick a revolution and join it.

Amazing what people make up based on what they choose to see.

Short term satisfaction will never lead to something timeless.

Make every detail perfect and limit the number of details to perfect.

What I love about New York is just the electricity I feel right away.

An idea that can change the course of the company can come from anywhere.

You don't have to start from scratch to have a massive impact on the world.

'Luck' is recognizing when the situation encourages build out and execution.

Starting anything is a roller coaster with the highest highs and lowest lows.

It's empowering to be asked to look at what's possible, not told how to do it.

Revolution looks at the intersection ahead and pushes people to do the right thing.

Great companies don't just have one founding moment. They have many founding moments.

I think Twitter is the future of communications and Square will be the payment network.

From a product standpoint, we want every touch point to feel magical. It inspires trust.

Meet customers where they are; question how to make the tools customers use more valuable.

My mom cares that I tweeted a picture of my breakfast. She's knows I'm eating and I'm safe.

We get to design what we want to see in the world rather than doing what other people think should be done.

My goal is to simplify complexity. I just want to build stuff that really simplifies our base human interaction.

Constraints inspire us in how we approach the press, how we approach business relationships, how we do everything.

Everyone has an idea, but it's really about executing the idea and attracting other people to help you with the idea.

There's an entire universe in every single tweet, and it all really depends on the content as far as how it's going to spread.

I fell in love with flora of all types, especially ferns. Loved the sparse structure and repetition of shape - almost fractal.

I was fascinated with jeans, because you can impress your life upon the jeans you wear. The way you sit imprints on the jeans.

The greatest lesson that I learned in all of this is that you have to start. Start now, start here, and start small. Keep it Simple.

Twitter has been my life's work in many senses. It started with a fascination with cities and how they work, and what's going on in them right now.

The strongest thing you can cultivate as an entrepreneur is to not rely on luck but cultivating an ability to recognize fortunate situations when they are occurring.

People who are using it to sell things on Craigslist to holding garage sales - campaigns - the Obama campaign and the Romney campaign both used Square to raise funds.

The idea of Twitter started with me working in dispatch since I was 15 years old, where taxi cabs or firetrucks would broadcast where they were and what they were doing.

Anything you're interested in the world whether it be Charlie rose or JetBlue or a public figure or your local coffee shop, they're on Twitter and broadcasting what is interesting to them.

When people come to Twitter and they want to express something in the world, the technology fades away. It's them writing a simple message and them knowing that people are going to see it.

Anything you're interested in the world - whether it be Charlie Rose or JetBlue or a public figure or your local coffee shop - they're on Twitter and broadcasting what is interesting to them.

I spend 90% of my time with people who don't report to me, which also allows for serendipity, since I'm walking around the office all the time. You don't have to schedule serendipity. It just happens.

I think Twitter is best when it sparks conversations elsewhere. To use YouTube and Facebook and all the tools we have available to us today to respond and also promote and answer and engage is awesome.

I am someone who tweets about what I have for breakfast, what I have for lunch, what I have for dinner, and for 99.99999 percent of the world, it's useless. It's meaningless. But for my mother, she loves it.

Technology to me does two things: it increases the velocity of communication and increases the number of people who can participate. That's it. That's really all technology for our entire history has ever done.

Twitter was around communication and visualizing what was happening in the world in real-time. Square was allowing everyone to accept the form of payment people have in their pocket today, which is a credit card.

IM is interesting because you look at your buddy list and, at a glance, see what your friends are listening to, what they're working on, what they're doing. The problem was that you were bound to the computer keyboard.

TweetDeck is a very interesting client, because it presents a view that no other client in the world presents, which is this multicolumn, massive amounts of information in one pane. And people really, really enjoy that.

A number of people in the United States, almost everyone, is using plastic cards to pay for things, but it's extremely difficult to accept these cards. So let's make it's easy and take more and more of the friction out as we can.

The Web provides a very easy way to immediately grasp what's going on. It really offers the transparency, so you can see, especially with the search engine, how people are using Twitter at one glance. The phone doesn't allow for that.

The interesting products out on the Internet today are not building new technologies. They're combining technologies. Instagram, for instance: Photos plus geolocation plus filters. Foursquare: restaurant reviews plus check-ins plus geo.

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