Where I feel the most productive and engaged is when I'm buried in code, buried in some project, tweaking some designs. I'm certainly introverted.

I always carry my camera with me.

For every new feature we add, we take an old one out. A lot of big sites don’t do that, and it’s a problem. Twitter started as a beautifully simple product, but it’s now going the same route as Facebook. The drive to innovate can overencumber and destroy a product.

I think appointments are caustic to creativity.

I never spent much time with people my own age.

People tell me I need an assistant, but I dont want one.

There are a lot of rich people in the world. There are very few people who have the privilege of getting to invent things that billions of people use.