I found this site, with quotes relating to the Constitution. A couple of highlights;

It does not require a majority to prevail, but rather an irate, tireless minority keen to set brushfires in people’s minds. – Samuel Adams

And this one;

In the general course of human nature, a power over a man’s subsistence amounts to a power over his will. – Alexander Hamilton

And my total/forever favorite;

My faith in the Constitution is whole; it is complete; it is total. And I am not going to sit here and be an idle spectator to the diminution, the subversion, the destruction, of the Constitution. – Congresswoman Barbara Jordan of Texas during the impeachment proceedings against President Richard M. Nixon