It was from The Great Brain series by John D. Fitzgerald. ( ChatGPT is preternaturally good at this sort of approximate search task)

I hope that AI augmentation of our collective thinking and our interactions with it, may help.

Worth a read, and also some skepticism. I do think that the unrelenting presence of the bottled thoughts of absolutely everyone else has been something we have dealt with very poorly, and as fairly unaided humans, even in conversation, may be unable to handle well.