How were the seeds of the French Revolution sown by the the Ancient Regime?

French culture was ruled by what you might call class war, the very rich and the very poor, there was no middle. The French were always reliant on rule from above, but that rule is what was destroying them, and the fight to retain that rule was only making it worse, it finally came to a head in the revolution, strangely enough it pretty much went back to the same thing afterward too.