Posterity: you will never know how much Posted on December 8, 2015September 16, 2013 by admin “Posterity: you will never know how much it has cost my generation to preserve your freedom. I hope you will make good use of it.” — John Quincy Adams Author: John Quincy Adams Category: history Tags: history, John Quincy Adams Spread the love Related posts: I thought that all of the sacrifices I sent American troops to Iraq to Nothing which is True or beautiful or History is always changing.