When you think of couponing, you picture a mom cutting coupons out of the back of the newspaper.

If dandelions were hard to grow, they would be most welcome on any lawn.

Admit your errors before someone else exaggerates them.

Hire great people and give them freedom to be awesome.

Local commerce, without question, will be one of the fundamental use cases enabled by mobile devices over the next several years.

I'm weird. But I'm a pretty serious person.

After four and a half intense and wonderful years as CEO of Groupon, I've decided that I'd like to spend more time with my family. Just kidding - I was fired today.

You're building a tool, not a piece of art. Don't be blinded by the vision.

We can't be afraid to be weird.

I never thought of myself as an entrepreneur before I started this. I just like to build things.

I think if there's any difference between me and a traditional CEO, it's that I've been unwilling to change myself or shape my personality around what's expected.

Never look down unless you're helping them up.

Never let an opportunity pass to give a well-deserved compliment.

I didn't know how serious it is to a female that you lift the lid.

There is no later. This is later.

It's not imperative that I graduate in four years, and it's not imperative that I get all A's.

I want to die at a hundred years old with an American flag on my back and the star of Texas on my helmet, after screaming down an Alpine descent on a bicycle at 75 miles per hour.

Enthusiasm is the divine particle in our composition: with it we are great, generous, and true; without it, we are little, false, and mean.

There are nearly 1 million Americans who visit the emergency room each year because of dental pain at a cost that runs into the hundreds of millions.

For me, poetry is the colour of Elizabeth Taylor's eyes, or the pauses in Pinter's plays - only the pauses, not the words.

Limitations gone: Since my mind fixed on the moon, Clarity and serenity Make something for which There's no end in sight.