Facebook tycoon Mark Zuckerberg and his wife, Priscilla Chan, announced the birth of their daughter, Max, via a post on the social network on Tuesday. In an open letter to their daughter, Zuckerberg and Chan outlined their hopes for her generation, which included eliminating poverty, promoting equality, providing everyone with healthcare and protecting the environment.

For your generation to live in a better world, there is so much more our generation can do.

Today your mother and I are committing to spend our lives doing our small part to help solve these challenges. I will continue to serve as Facebook’s CEO for many, many years to come, but these issues are too important to wait until you or we are older to begin this work. By starting at a young age, we hope to see compounding benefits throughout our lives.

As you begin the next generation of the Chan Zuckerberg family, we also begin the Chan Zuckerberg Initiative to join people across the world to advance human potential and promote equality for all children in the next generation. Our initial areas of focus will be personalized learning, curing disease, connecting people and building strong communities.

We will give 99% of our Facebook shares — currently about $45 billion — during our lives to advance this mission. We know this is a small contribution compared to all the resources and talents of those already working on these issues. But we want to do what we can, working alongside many others.

We’ll share more details in the coming months once we settle into our new family rhythm and return from our maternity and paternity leaves. We understand you’ll have many questions about why and how we’re doing this.

As we become parents and enter this next chapter of our lives, we want to share our deep appreciation for everyone who makes this possible.

We can do this work only because we have a strong global community behind us. Building Facebook has created resources to improve the world for the next generation. Every member of the Facebook community is playing a part in this work.

We can make progress towards these opportunities only by standing on the shoulders of experts — our mentors, partners and many incredible people whose contributions built these fields.

And we can only focus on serving this community and this mission because we are surrounded by loving family, supportive friends and amazing colleagues. We hope you will have such deep and inspiring relationships in your life too.

Max, we love you and feel a great responsibility to leave the world a better place for you and all children. We wish you a life filled with the same love, hope and joy you give us. We can’t wait to see what you bring to this world,” they wrote in the post.

According to TIME, since 2000, only about 150 babies born in the United States have been named Max, according to Social Security Administration data, including only 14 in 2014.