Gray Lensman by E.E. Smith — Read

Considerably more than the stipulated week passed before Kinnison was done with the librarian and with the long-range communicator beam, but eventually he succeeded in enlisting the aid of the fifty-three most eminent scientists and thinkers of all the planets of Galactic Civilization. From all over the Galaxy were they selected; from Vandemar and Centralia and Alsakan; from Chickladoria and Radelix; from the solar systems of Rigel and Sirius and Antares. Millions of planets were not represented at all; and of the few which were, Tellus alone had more than one delegate.

This was necessary, Kinnison explained carefully to each of the chosen. Sir Austin Cardynge, the man whose phenomenal brain had developed a new mathematics to handle the positron and the negative energy levels, was the one who would do the work; he himself was present merely as a co-ordinator and observer. The meeting place, even, was not upon Tellus, but upon Medon, the newly acquired and hence entirely neutral planet. For the Gray Lensman knew well the minds with which he would have to deal.