Analysis of information sources in references of the Wikipedia article "Özgür irade" in Turkish language version.
...Aristotle and Epictetus: In the latter authors it was the fact that nothing hindered us from doing or choosing something that made us have control over them. In Alexander's account, the terms are understood differently: what makes us have control over things is the fact that we are causally undetermined in our decision and thus can freely decide between doing/choosing or not doing/choosing them.