From then on, the golden age began. The minds of the people of Antares became bigger and bigger, their bodies proportionately smaller, until the cycle eventually was completed. Every being in front of the speaker was a monstrous heap of black viscidity, each mass an enormous brain, a sexless thing that lived for Thought. Long ago it had been discovered that life could be created artificially in tissue formed in the laboratories of the chemists. Sex was thus destroyed, and the inhabitants no longer spent their time in taking care of families. Nearly all the countless hours that were saved were put into scientific advance, with the result that the star leaped forward in an age of progress never paralleled. The beings, rapidly becoming Brains, found that by the extermination of the parasites and bacteria on Antares, by changing their own organic structure, and by _willing_ to live, they approached immortality. They discovered the secrets of Time and Space; they knew the extent of the universe, and how Space in its farther reaches became self-annihilating. They knew that life was self-created and controlled its own period of duration. They knew that when a life, tired of existence, killed itself, it was dead forever; it could not live again, for death was the final chemical change of life. These were the shapes that spread in the vast sea before the speaker. They were shapes because they could assume any form they wished. Their all-powerful minds had complete control of that which was themselves. When the Brains were desirous of traveling, they relaxed from their usual semi-rigidity and flowed from place to place like a stream of ink rushing down a hill; when they were tired, they flattened into disks; when expounding their thoughts, they became towering pillars of rigid ooze; and when lost in abstraction, or in a pleasurable contemplation of the unbounded worlds created in their minds, within which they often wandered, they resembled huge, dormant balls. From the speaker himself had come no sound although he had imparted his thoughts to his sentient assembly. The thoughts of the Brains, when their minds permitted, emanated to those about them instantly, like electric waves. Antares was a world of unbroken silence.