The position that we have the potential to freely choose our actions must be further qualified. This freedom is not unlimited; our potential freedom of action is a limited freedom. We have the power to freely choose our actions from the set of alternative actions that are open to us. That is, our physical circumstances limit the range of options from which we can freely choose.
This latter implication follows from the fact that the more options I am aware of, the more options I have to choose from. From this fact, it follows that the more open alternatives I am aware of, the freer I can be in my actual choices. If I only know about two options open to me in a particular situation, but there are in fact fifty other ones of which I am unaware, then I do not have as much freedom as I would if I knew about those other options as well. Quantitatively, I am free to choose between 2 options in the one case and fifty-two in the other. So, the more knowledge of our real options we have, the freer we can be in the choices make.
From the fact that increased knowledge of our options means increased freedom of action, it follows that if we value freedom, then we should seek knowledge of our alternatives (for this knowledge increases our freedom). Knowledge increases freedom; ignorance limits it.