sphere of duty to trace the slow progress of that idea through the chequered scenes of our history, and to describe how subtle speculations touching the nature of conscience promoted a nobler and more spiritual conception of the liberty that protects it,[46] until the guardian of rights developed into the guardian of duties which are the cause of rights,[47] and that which had been prized as the material safeguard for treasures of earth became sacred as security for things that are divine. All that we require is a workday key to history, and our present need can be supplied without pausing to satisfy philosophers. Without inquiring how far Sarasa or Butler, Kant or Vinet, is right as to the infallible voice of God in man, we may easily agree in this, that where absolutism reigned, by irresistible arms, con-
