Most of the time, the things that really change the world exist for something fundamentally selfish and then the world-changing ends up being a side-effect of that.

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.

CHALLENGES BUILD CHARACTER.

There is nothing fiercer than a failed artist. The energy remains, but having no outlet, it implodes in a great fart of rage which smokes up all the inner windows of the soul.

What's a jagoff?" Stich asked."It's like a jerkoff, except it's you, " Kat said.

And the seventh rule is if this is your first night at fight club, you have to fight.

We are shaping young kids to be leaders in their communities and also to be healthier.

Besides, nowadays, almost all capable people are terribly afraid of being ridiculous, and are miserable because of it.

I still have a hard time just calling myself a musician. If I'm talking to somebody and they ask me what I do, I say I play music.

Try never to speak of your enemies by name. Any publicity is still publicity - and there are those for whom your disapproval constitutes a recommendation.

The Tea Party movement as I perceive it is all about recognizing the difference between state and federal powers. And that there are limits to federal power that need to be respected.

Explosion without an objective', declared Miles Blundell, 'is politics in its purest form'.