Cogito, ergo sum (See CSMK III 159, 161.) Another predecessor was Avicenna's "Floating Man" thought experiment on human self-awareness and self-consciousness. The 8th century Hindu philosopher Adi Shankara wrote in a similar fashion, No one thinks, 'I am not', arguing that one's existence cannot be doubted, as there must be someone there to doubt. The central idea of "cogito, ergo sum" is also the topic of Mandukya Upanishad. Spanish philosopher Gómez Pereira in his 1554 work "De Inmortalitate Animae", published in 1749, wrote ""nosco me aliquid noscere, & quidquid noscit, est, ergo ego sum"" ("I know that I know something, anyone who knows
Fuzzy Ergo Sum he is a fan of Piper, and he’s also a good enough writer to pull off the right mix of homage and originality." However, several reviewers objected to the lack of any warning on the cover that this book ends on a cliffhanger, making the story incomplete. Fuzzy Ergo Sum Fuzzy Ergo Sum is a science fiction novel written during 2006-2009 by Wolfgang Diehr as a sequel to H. Beam Piper's Fuzzy trilogy: "Little Fuzzy", "Fuzzy Sapiens", and "Fuzzies and Other People". The trilogy concerns the discovery of a primitive species of small, childlike but sapient furry creatures on Zarathustra,