In the past, people have looked at photos as a record of memory. The focus has been on the past tense. With Instagram, the focus is on the present tense.

The major reason why Instagram works is that you can follow anyone out there and start following their photos immediately.

Every startup should address a real and demonstrated need in the world. If you build a solution to a problem lots of people have, it's so easy to sell your product to the world.

I really love connecting people, creating communities. As a kid, creation was something that I always loved.

I promise you, a lot of it is luck. But you make your own luck by working really hard and trying lots and lots of things.

I grew up as a photo nut. Every Christmas I would get a new camera. It's a huge part of my life.

The world runs on luck.