"What we needed to create a high level of culture were three things: freedom, justice and efficiency. We will explain these concepts one at a time, beginning with the last, efficiency. "You are shocked by the size of our population, but the space surprises you. Strange, eh? It is not so strange when you realize that you are not shocked by the number of people but by the space that is left over in what to you is a ridiculously overpopulated world. You are shocked by our efficiency. To Us, it is the most normal thing in the world, because without this concept, we simply could not exist. Without efficiency, our world would immediately collapse. You will continually come up against this concept in our explanations because we must make it dear to you how carefully each of the three concepts-freedom, justice and efficiency - we had to employ to reach the level of civilization that can be called stable. "Also, justice is a condition for efficiency.""