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
Mr. Cogito Seeks Advice"), "Gra Pana Cogito" ("Mr. Cogito's Game"), "Co myśli Pan Cogito o piekle" ("What Mr. Cogito Thinks About Hell"), "Pan Cogito o postawie wyprostowanej" ("Mr Cogito On The Upright Position"), "Przesłanie Pana Cogito" ("The Message of Mr Cogito"). This poetry collection was published in Paris in 1983. An allusion to the state of martial law imposed in Poland by the Communist junta, it was officially unpublishable in Poland. A few months later an underground edition was published by a clandestine press in Poland, and no legal edition was available until 1992. It includes another twelve poems featuring Mr. Cogito,