A constitution providing for the greatest human freedom according to laws that permit the freedom of each to exist together with that of others (not one providing for the greatest happiness, since that would follow of itself) is at least a necessary idea, which one must make the ground not merely of the primary plan of a state's constitution but of all the laws too; and in it we must initially abstract from the present obstacles, which may perhaps arise not so much from what is unavoidable in human nature as rather from neglect of the true ideas in the giving of laws.