At Facebook we feel a lot of affinity not just for this community but for any community that is trying to do what Davos is trying to do, which is to share information. And Davos is doing it in a particular way - I think the Facebook approach is obviously more broad-based, we're trying to include everyone in the world. But the goal is the same: bring people together, to share information and make the world more connected, and have people have a deeper understanding of themselves, others, the communities of which they want to be a part and can be a part.

Every job will demand some sacrifice. The key is to avoid unnecessary sacrifice.

I believe we need affordable child care. I believe we need flexibility. I believe we need institutional reform and public policy reform.

What about the rat race in the first place? Is it worthwhile? Or are you just buying into someone else's definition of success? Only you can decide that, and you'll have to decide it over and over and over. But if you think it's a rat race, before you drop out, take a deep breath. Maybe you picked the wrong job. Try again. And then try again.

There is no straight path from your seat today to where you are going. Don't try to draw that line. You will not just get it wrong, you'll miss big opportunities. And I mean big-like the Internet. Careers are not ladders, those days are long gone, but jungle gyms. Don't just move up and down, don't just look up, look backwards, sideways around corners. Your career and your life will have starts and stops and zigs and zags. Don't stress out about the white space-the path you can't draw- because there in lies both the surprises and the opportunities.

When companies offer support and assistance for personal and family hardships, their employees become more loyal and more productive.

I tell people in their careers, 'Look for growth. Look for the teams that are growing quickly. Look for the companies that are doing well. Look for a place where you feel that you can have a lot of impact.'