I think when tragedy occurs, it presents a choice. You can give in to the void, the emptiness that fills your heart, your lungs, constricts your ability to think or even breathe. Or you can try to find meaning. These past thirty days, I have spent many of my moments lost in that void. And I know that many future moments will be consumed by the vast emptiness as well. But when I can, I want to choose life and meaning.

Leadership is not bullying and leadership is not aggression. Leadership is the expectation that you can use your voice for good. That you can make the world a better place.

In our performance reviews with women, we need to be saying, "Are you reaching enough? Are you applying for jobs when you meet some of the criteria like men, or are you waiting to meet all the criteria like women do?" There's so much we can do to encourage women to take on more and believe in themselves.

You know, there has never been a 24-hour period in five years when I have not responded to e-mail at Facebook. I am not saying it's easy. I work long hours.

Motivation comes from working on things we care about. It also comes from working with people we care about.

Fortune does favor the bold and you'll never know what you're capable of if you don't try.

I was grateful that Facebook already had generous bereavement policies . Now Facebook employees receive 20 days paid leave to grieve the loss of an immediate family member and 10 days for an extended family member. I'm proud that we're able to do this and I hope more businesses do the same. Only 60 percent of private sector workers get paid time off after the death of a loved one, and then it's usually just a few days. Workers and families deserve better than that.