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.

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

Twitter is the world.

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.

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

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

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