Is liberty good? I am inclined to say that it is neither good nor bad, for two reasons.
First, because the concept "liberty" does not include an emotional reaction either positive or negative. We may have a positive or negative reaction to a specific instance of liberty, but liberty itself provokes no reaction in us in the abstract. If liberty were good by itself, we would expect it to provoke some sort of positive emotional reaction when we considered it by itself.
Secondly, liberty only removes oppression from us. It prevents specific goods from being taken from us, but those goods are what is good, and the liberty only serves to protect them.