Mark Zuckerberg and Priscilla Chan announced on Tuesday that they have welcomed a baby girl named Max.
In a moving letter addressed to their child, the Facebook creator and his wife wrote, "Your mother and I don't yet have the words to describe the hope you give us for the future."
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The lengthy post has a very hopeful tone for the challenges and opportunities Max's generation will face, including health, poverty, technology, and globalization.
"Technological progress in every field means your life should be dramatically better than ours today," the new parents noted. "We will do our part to make this happen, not only because we love you, but also because we have a moral responsibility to all children in the next generation."
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The couple also announced the "Chan Zuckerberg Initiative to join people across the world to advance human potential and promote equality for all children in the next generation," adding that "We will give 99% of our Facebook shares -- currently about $45 billion -- during our lives to advance this mission."
"Max, we love you and feel a great responsibility to leave the world a better place for you and all children," Zuckerberg and Chan concluded. "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."
In July, 31-year-old Zuckerberg revealed that he and his 30-year-old spouse's path to parenthood was challenging and at times tragic, noting that they suffered three heartbreaking miscarriages along the way.
Watch the video below.