Teens just understand the world in ways I don't think any of us adults do.

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

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

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.

In order to work well, markets need a basic level of trust.

How unbearable at times are people who are happy, people for whom everything works out.

The longer we stay in Hell, the more we become attached to it.

The British tend to shy away from the spotlight. We don't like being singled out in any way, and I think that is something which is important for me to learn to do.

When something is 'new and improved', which is it? If it's new, then there has never been anything before it. If it's an improvement, then there must have been something before it.

They lived and laughed and loved and left.

There are times I go out and meet people and flirt, but it's not really appropriate to have anything serious.

What I am saying, I suppose, is that you write as if everyone is dead. Then you face the music. I don't know any other way to keep the teeth sharp and the spirit alive.

He travels best that knows when to return.

Did I choose this life of illusion? Don't be mad. My bed was made, I just lied in it.