It is the very essence of despotism that it can never afford to fail. This is what distinguishes it most vitally from democracy. In a despotism there is no organized opposition which can take over the power when the Administration in office has failed. All the eggs are in one basket. Everything is staked on one coterie of men. When the going is good, they move more quickly and efficiently than democracies, where the opposition has to be persuaded and conciliated. But when they lose, there are no reserves. There are no substitutes on the bench ready to go out on the field and carry the ball. That is why democracies with the habit of party government have outlived all other forms of government in the modern world. They have, as it were, at least two governments always at hand, and when one fails they have the other. They have diversified the risks of mortality, corruption, and stupidity which pervade all human affairs. They have remembered that the most beautifully impressive machine cannot run for very long unless there is available a complete supply of spare parts.