Freedom is manifest not so much in the ability (i.e., to be at liberty) to choose as it is in the ability to appreciate and to reciprocate in gratitude.
To be able to be thankful is the true expression of freedom.
"held as a guarantee to a treaty of peace between two previously antagonistic sides." (The Gift of Thanks, Margaret Visser, 2008; page 23)
"... the more obligatory giving is, the less receivers feel grateful." (The Gift of Thanks, Margaret Visser, 2008; page 27)