From the "Gates of Fire":
"In 480 BC the forces of the Persian Empire under King Xerxes, numbering according to Herodotus two million men, bridged the Hellespoint and marched in their myrids to invade and enslave Greece...
...The Spartans and their Thespian allies died to the last man, but the standard of valor they set by their sacrifice inspired the Greeks to rally and, in that fall and spring, defeat the Persians at Salamis and Plataea and preserve the beginnings of Western democracy and freedom from perishing in the cradle..."
Before the battle of Thermopyle, Ptammitechus (an Egyptian Marine) shows a map to a group of Spartans at Rhodes. Pointing out how large the Persian empire is and how small Greece is in comparison. "...Listen to me brothers. The race of Egyptians is an ancient one...We have ruled and been ruled. Even now we are technically a conquered people, we serve the Persians. Yet regard my station friends. Do I look poor? Is my demeanor dishonored? Peer here within my purse. WIth all respect, brothers, I could buy and sell you and all you own with only that which I bear upon my person....His Majesty will honor you Spartans no less than us Egyptians, or any other great warrior people, should you see wisdom and enlist yourselves voluntarily beneath his banner. In the East we have learned that which you Greeks have not. The wheel turns, and man must turn with it. To resist is not mere folly, but madness."
"You have never tasted freedom, friend," Dienekes (a Spartan) spoke, "or you would know it is purchased not with gold, but steel...And as for the wheel you speak of, like every other, it turns both ways."
Seems to me that the Spartans understood freedom. Probably better than most of us.