Actor and Eastern Congo Initiative founder Ben Affleck recently revealed the inspiration for his considerable charity work over the past few years: his children.

“I got to a point in my life where I felt like I had been very fortunate,” he admitted, “and I wanted to do something more with my life than just make movies and try to make money. I wanted to do something that was important to me in other ways and would serve as an example to my kids.”

Most recently, Affleck leveraged Facebook’s new layout to create a timeline about his work with the Eastern Congo Initiative. The nonprofit helps local organizations bolster the region through health care and other social programs. “I tell [my kids] it’s important to be involved in the world in ways that help others and not just yourself,” he added.