"The first complaint we hear from everyone is: 'Why would I want to join this stupid useless thing and know what my brother's eating for lunch?' But that really misses the point because Twitter is fundamentally recipient-controlled - you choose to listen and you choose to leave. But you also choose what to put down and what to share."

"I'm less interested in how people are following each other and more interested in how they are following topics and tweets themselves. People are following more key words and concepts and more ideas and acting on those rather than individuals or organizations."

"You don't have to start from scratch to do something interesting. You don't have to start from scratch to have a massive impact on the world. You have to have a good idea. You have to convince other people of those good ideas. And you have to push as quickly as possible."

"All my days are themed. Monday is managementTuesday is product, engineering, and design. Wednesday is marketing, growth, and communications. Thursday is partnership and developers. Friday is company and cultureOn the days beginning with T, I start at Twitter in the morning, then go to Square in the afternoon. Sundays are for strategySaturday is a day off."

"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."

"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."

"Your job as an executive is to edit, not write. It's OK to write once in a while but if you do it often there's a fundamental problem with the team. Every time you do something ask if you're writing or editing and get in the mode of editing."

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

"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."

"Making something simple is very difficult."

"Success is never accidental."

"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."

"Short term satisfaction will never lead to something timeless."

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

"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."

"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."

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

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

"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."

"I stopped going to Kingdom Hall, the church, when I was 11 years old, so I was very young. They don't celebrate birthdays, you get no Christmas, so it's a very difficult religion for children to get into. And they do a lot of finger-pointing among the Jehovah's Witnesses."

"I don't want people to get confused. I'm not going to be putting out a gospel album."

"It's "always "good to be working."

"When you go to jail, there's so much simple stuff missing. You just want some good toilet paper or a real toothbrush, a real blanket and a real bed to lay in."

"After doing two years in prison, trust me, I've seen a lot of tough guys pray. They're not just praying for themselves; they're praying for their family and the people they've let down."