Noun:

People in the future, all future generations

” We cannot celebrate his memory the way a posterity ought to, by acknowledging a debt we’re called upon to honor, and so we want to celebrate his memory by confessing to a bankruptcy that dishonors us”

I now understand that that the people from the future should acknowledge his memory by accepting or confessing to a bankruptcy that may dishonor them.

http://www.merriam-webster.com/dictionary/posterity