The Constitution is the Sovereign in a republic. While the people as a whole is where sovereignty resides, the constitution is where it is enshrined. In a Monarchy, all power resides in the King or Queen. In Great Britain, Elizabeth II is sovereign. Whatever Tony Blair does as Prime Minister, he is actually exercising the prerogative of the Queen. Britain does have a constitution, although it is not in one document. The Queen represents the reality of this constitution. Parliament with the Queen may be a dictator but convention prevents it from doing so. The Queen does not have much political power but she embodies unity by being above partisan interests. So the British do have liberty, even if at times they have less democracy than that of the Americans who may have much democracy, but less liberty. In the Philippines, Gloria Macapagal-Arroyo is not sovereign even though as President she may possess much more power than Elizabeth II does. In our republic, the Constitution is sovereign...
"It is surely harmful to souls to make it a heresy to believe what is proved" - Galileo