Discourses, "To or Against Those Who Obstinately Persist in What They Have Determined" (§1)

“When some persons have heard these words, that a man ought to be constant (firm), and that the will is naturally free and not subject to compulsion, but that all other things are subject to hindrance, to slavery, and are in the power of others, they suppose that they ought without deviation to abide by everything which they have determined. But in the first place that which has been determined ought to be sound (true).”