Langdon teaches Physics and Math to high school students.  He is currently affiliated with OID (Organization of International Development).

“Whatever you have was given to you, so you are expected to give back.  Whatever you achieved through your individual hard work, society gave you the opportunity to succeed and prosper.  So you are expected to give similar returns to society.

If you are a part of your community, then you are expected to give to, as well as take from, your community.  Since the future of a community relies on its children and young adults, the community needs to make continuous and proper investments in its young, in order to expect an adequate return on their investments for its elders.