In view of the many difficulties connected with the problem of freedom many thinkers would urge us to a compromise. Renouvier is aware of the dangers of this attitude, and he brings into play against it his logical method of dealing with problems. This does not contradict his statement about the indemonstrability of freedom, nor does it minimise the weight and significance of the moral case for freedom: it complements it. Between contradictories or incompatible propositions no middle course can be followed. Freedom and necessity cannot be both at the same time true, or both at the same time false, for of the two things one must be true—namely, either human actions are all of them totally predetermined by their conditions or antecedents, or they are not all of them totally predetermined. It is to this pass that we are brought in the logical statement of the case. Now sceptics would here assert that doubt was the only solution. This would not realh be a solution, and however legitimate doubt is in front of conflicting theories, it involves the death of the soul if it operates in practical affairs and in any circumstances where some belief is absolutely necessary to the conduct of life and to action.
The freedom in question, as Renouvier is careful to remind us, does not involve our maintaining the total indetermination of things or denial of the operations of necessity within limits. Room is left for freedom when it is shown that this necessity is not universal. Many consequences of free acts may be necessitated. For example, says Renouvier, I have a stone in my hand. I can freely will to hurl it north or south, high or low, but once thrown from my hand its path is strictly determined by the law of gravity. The voluntary movement of a man on the earth may, however slightly, alter the course of a distant planet. Freedom, we might say, operates in a sphere to which necessity supplies the matter. Ultimately any free act is a choice between two alternatives, equally possible, but both necessitated as possibilities. The points of free action may seem to take up a small amount of room in the world, so to speak, but we must realise how vital they are to any judgment regarding its character, and how tremendously important they are from a moral point of view. So far, claims Renouvier, from the admittance of freedom being a destruction of the laws of the universe, it really shows us a special law of that universe, not otherwise to be explained—namely, the moral law. Freedom is thus regarded by Renouvier as a positive fact, a moral certainty.