His thoughts on the subject slipped through his mind with a rapidity common to a Speaker - and while he was thinking, he also remained sensitively aware of the glow in Novi's mind, the response to the gently pervasive mentalic field about them. It was not growing stronger as the Foundation warship drew nearer.
This was not, in itself, an absolute indication that the warship was not equipped with mentalics. It was well known that the mentalic field did not obey the inverse-square law. It did not grow stronger precisely as the square of the extent to which distance between emitter and receiver lessened. It differed in this way from the electromagnetic and the gravitational fields. Still, although mentalic fields varied less with distance than the various physical fields did, it was not altogether insensitive to distance, either. The response of Novi's mind should show a detectable increase as the warship approached - some increase.
(How was it that no Second Foundationer in five centuries - from Hari Seldon on - had ever thought of working out a mathematical relationship between mentalic intensity and distance? This shrugging off of physics must and would stop, Gendibal silently vowed.)
If the warship possessed mentalics and if it felt quite certain it was approaching a Second Foundationer, would it not increase the intensity of its field to maximum before advancing? And in that case, would not Novi's mind surely register an increased response of some kind?
- Yet it did not!
Confidently Gendibal eliminated the possibility that the warship possessed mentalics. It was advancing out of ignorance and, as a menace, it could be downgraded.
The mentalic field, of course, still existed, but it had to originate on Gaia. This was disturbing enough, but the immediate problem was the ship. Let that be eliminated and he could then turn his attention to the world of the Anti-Mules.
He waited. The warship would make some move or it would come close enough for him to feel confident that he could pass over to an effective offense.
The warship still approached - quite rapidly now - and still did nothing. Finally Gendibal calculated that the strength of his push would be sufficient. There would be no pain, scarcely any discomfort - all those on board would merely find that the large muscles of their backs and limbs would respond but sluggishly to their desires.
Gendibal narrowed the mentalic field controlled by his mind. It intensified and leaped across the gap between the ships at the speed of light. (The two ships were close enough to make hyperspatial contact - with its inevitable loss of precision - unnecessary.)
And Gendibal then fell back in numbed surprise.
The Foundation warship was possessed of an efficient mentalic shield that gained in density in proportion as his own field gained in intensity. - The warship was not approaching out of ignorance after all - and it had an unexpected if passive weapon.
"Ah," said Branno. "He has attempted an attack, Liono. See!"
The needle on the psychometer moved and trembled in its irregular rise.
The development of the mentalic shield had occupied Foundation scientists for a hundred and twenty years in the most secret of all scientific projects, except perhaps for Hari Seldon's lone development of psychohistorical analysis. Five generations of human beings had labored in the gradual improvement of a device backed by no satisfactory theory.
But no advance would have been possible without the invention of the psychometer that could act as a guide, indicating the direction and amount of advance at every stage. No one could explain how it worked, yet all indications were that it measured the immeasurable and gave numbers to the indescribable. Branno had the feeling (shared by some of the scientists themselves) that if ever the Foundation could explain the workings of the psychometer, they would be the equal of the Second Foundation in mind control.
But that was for the future. At present, the shield would have to be enough, backed as it was by an overwhelming preponderance in physical weapons.
Branno sent out the message, delivered in a male voice from which all overtones of emotion had been removed, till it was flat and deadly.
"Calling the ship Bright Star and its occupants. You have forcibly taken a ship of the Navy of the Foundation Federation in an act of piracy. You are directed to surrender the ship and yourselves at once or face attack."
The answer came in natural voice: "Mayor Branno of Terminus, I know you are on the ship. The Bright Star was not taken by piratical action. I was freely invited on board by its legal captain, Munn Li Compor of Terminus. I ask a period of truce that we may discuss matters of importance to each of us alike."
Kodell whispered to Branno, "Let me do the speaking, Mayor."
She raised her arm contemptuously, "The responsibility is mine, Liono."
Adjusting the transmitter, she spoke in tones scarcely less forceful and unemotional than the artificial voice that had spoken before:
"Man of the Second Foundation, understand your position. If you do not surrender forthwith, we can blow your ship out of space in the time it takes light to travel from our ship to yours - and we are ready to do that. Nor will we lose by doing this, for you have no knowledge for which we need keep you alive. We know you are from Trantor and, once we have dealt with you, we will be ready to deal with Trantor. We are willing to allow you a period in which to have your say, but since you cannot have much of worth to tell us, we are not prepared to listen long."
"In that case," said Gendibal, "let me speak quickly and to the point. Your shield is not perfect and cannot be. You have overestimated it and underestimated me. I can handle your mind and control it. Not as easily, perhaps, as if there were no shield, but easily enough. The instant you attempt to use any weapon, I will strike you - and there is this for you to understand: Without a shield, I can handle your mind smoothly and do it no harm. With the shield, however, I must smash through, which I can do, and I will be unable then to handle you either smoothly or deftly. Your mind will be as smashed as the shield and the effect will be irreversible. In other words, you cannot stop me and I, on the other hand, can stop you by being forced to do worse than killing you. I will leave you a mindless hulk. Do you wish to risk that?"