If you've got an idea, start today. There's no better time than now to get going.

Focusing on one thing and doing it really, really well can get you very far.

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.

Above all else, products spread when they're useful and they're usable

I think Instagram at its best is where you feel like you're getting the most authentic version of the person on the other side of the camera.

Great products sell themselves.

Our goal is to not just be a photo-sharing app, but to be the way you share your life when you're on the go.

Every photo you take communicates something about a moment in time - a brief slice of time of where you were, who you were with, and what you were doing.

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.

Instagram was created because there was no single place dedicated to giving your mobile photos a place to live and to be seen.

I've learned that if someone threatens my peace of mind, self-respect, or self-worth... I must walk away. I owe it to myself... I owe it to my future.

The only faithful tradition is change.

I can't remember faces, don't remember names, but after awhile and a thousand miles it all becomes the same.

Pro football is a game; not a war. It's for win or lose, not life or death... but say that in the summer, for winter brings the playoffs, and a season is at stake.

Before you can write a novel you have to have a number of ideas that come together. One idea is not enough.

Athenian men, I respect and love you, but I shall obey the god rather than you.

Kids love me because I write stories that tell them about their capacity for evil. I'm one of the few writers who lets you cleanse yourself that way.

Whatever withdraws us from the power of our senses; whatever makes the past, the distant, or the future predominate over the present, advances us in the dignity of thinking beings.

One can only believe entirely, perhaps, in what one cannot see.

I loved school, I loved putting on my uniform and doing homework every day. I was one of those good students that the teachers liked. I guess that's got to be a pretty nerdy, geeky part of me.