On the same impulse they gazed at the night sky blazing with the heart of the galaxy spread around them, a galaxy as yet less than half mapped, only a small fraction of its secrets known. Like many new-mates they planned a leisurely, lengthy quest among the stars, a trip for which their mutual absorption peculiarly fitted them. After all, the advancement of knowledge still required physical and intellectual research and the joy of living still demanded physical and emotional release, but there was one great barrier to space-travel. Leaving the great community of Challon ordinarily meant leaving an intensely experienced fellowship to endure a shattering isolation no less intensely felt, unless one were fortunate enough to be chosen for an exploration team. There was both comfort and common sense in the use of teams of the greatest numerical strength consistent with efficiency, but the resources demanded by such teams limited the number that could be fielded at one time. Consequently, private voyages in small craft were not entirely uncommon among the hardy--or the temporarily self-sufficient, such as he and Andra. In a few days they would leave Challon behind, break for the first time the half-spiritual link with all their world, and voyage forth in the belief that their love for each other was alone enough to sustain them. At the same instant the same doubt of self-worthiness crept into each mind and was read and stoutly answered by the other, while a dozen neighbors near and distant interrupted their own concerns to murmur encouragement and recall the doubts they, too, had felt and learned to dismiss. Reassured he led Andra back to the house, scarcely aware of the background bustle of other minds busy with other matters--nor, in fact, greatly caring at that moment that others existed. The manner of love may change, but not the manners of lovers. * * * * * Memory surged after memory on waves of nostalgia and homesickness that told their own story of why the memories had been long buried. Challon had fallen away behind them and the strangeness of the cleavage from their fellows had dismayed them. In and around the spaceport center, a multitude of the fellows they were never to see again had paused long enough in their own affairs to mesh thoughts in a final projection of encouragement that reached after the dwindling ship like a gesture of farewell. A long, long farewell. A final farewell, unrecognized for the last parting that it was.