Peter looked up, shrugged. "We can fire another flare twelve hours later," he said. "I am not particular who rescues us. I am an American, you know. I owe something to the Soviets too. When you look at the world from here, from another planet, these distinctions of nationality seem so--somehow--unimportant. We are all humans, all from the same ancestors. Even if we were not brothers, we would feel ourselves such. Our roots go to all parts of the world. If you add up all people's ancestors a hundred generations back, you will realize that there can't be anyone who is not distantly related to everyone else--that we all share somebody in our ancestry who lived in every country of the world, shared all the histories of the past and all the different politics and opinions." Peter grew quiet, as if a little amazed at his own outburst. Robin drew close to him, threw an arm around him. "I think when more men get out among the stars, people are going to realize that we can't afford to think of ourselves as anything other than citizens of Mother Earth. In the face of the universe, of Moonmen, of the inhabitants of the millions of other planets that must exist, our national differences seem so small, so much a private family matter as not to be thrashed out in the public of our interstellar neighbors. I think it's good we are brothers. All men are brothers." Robin threw the switch. Outside, the crater suddenly lighted up in a blinding white glare, a blaze that threw wild, dancing black shadows several miles across the floor, that momentarily lighted the great crags and precipices of the mountains, that made an outburst of grandeur in a moonscape of unearthly terror and beauty. Five minutes later, when the flares had died down, Robin again threw the switch. The second set of magnesium bombs went off and again the crater was brilliantly lighted. "On Earth that should stand out very sharply. It is nearly a new moon for them. This spot of light will be like a blinding diamond on a black velvet setting," said Peter poetically. They rested now, taking their space suits off, lolling around on two hammocks, just talking, renewing acquaintance, exchanging experiences. They ate another meal, slept, finally donned their outfits again and set off the next set of flares a half Earth-day later, when the massive area of Eurasia was on the face of the globe in the Lunar sky. "Now the Russian observers have had a chance to see us," said Peter. "We ought to go back to the underground world again. Our supplies here are not enough. In order to eat and breathe the next few months, we will have to live among the Glassies. We have to go back to the great cleft again." "Yes," said Robin. "And that brings up the question of Von Borck. He'll be waiting for us, you know." His brother nodded. "Ah, but this time we will be the ones who are armed and ready." He reached down, took out a second gun belt, handed it to Robin. "Use this. Strap it around your space suit."