But Sir George Lewis was not perfect; he was not even an average good head in another respect. The use of a fresh mind applied to the official mind is not only a corrective use, it is also an animating use. A public department is very apt to be dead to what is wanting for a great occasion till the occasion is past. The vague public mind will appreciate some signal duty before the precise, occupied administration perceives it. The Duke of Newcastle was of this use at least in the Crimean War. He roused up his department, though when roused it could not act. A perfect Parliamentary Minister would be one who should add the animating capacity of the Duke of Newcastle to the accumulated sense, the detective instinct, and the laissez-faire habit of Sir George Lewis.