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Died 30 March 1689, Warsaw, Poland |
de non existentia dei kazimierz yszczy ski grafzero
Kazimierz Łyszczyński ([kaˈʑimjɛʂ wɨˈʂt͡ʂɨɲskʲi] (Born on March 4, 1634 in Łyszczyce (today Belarus) – March 30, 1689 in Warsaw, Poland), also known in English as Casimir Liszinski, was a Polish-Lithuanian nobleman, landowner in Brest Litovsk Voivodeship of the Grand Duchy of Lithuania, philosopher, and soldier in the ranks of the Sapieha family, who was accused, tried, and executed for atheism in 1689.
Contents
- de non existentia dei kazimierz yszczy ski grafzero
- Kazimierz yszczy ski wywiad z prof nowickim
- Life trial and execution
- De non existentia Dei
- Status in modern Poland
- References

For eight years he studied philosophy as a Jesuit and then became a podsędek (supply judge) in legal cases against the Jesuits concerning estates. He wrote a treatise entitled The non-existence of God and was later executed on charges of atheism. His trial has been criticized and is seen as a case of legalized religious murder in Poland.

Kazimierz yszczy ski wywiad z prof nowickim
Life, trial, and execution

Kazimierz Łyszczyński was a nobleman, landowner, philosopher, and soldier in the service of the Sapieha family. For eight years he studied philosophy as a Jesuit and then became a supply judge (podsędek) in legal cases against the Jesuits concerning estates.

Łyszczyński had read a book by Henry Aldsted entitled Theologia Naturalis, which attempted to prove the existence of divinity. But its arguments were so confused that Łyszczyński was able to infer many contradictions. Ridiculing Aldsted, Łyszczyński wrote in the book's margins the words "ergo non est Deus" ("therefore God does not exist").
This was discovered by one of Łyszczyński's debtors, Jan Kazimierz Brzoska, who was the nuncio of Brest in Poland or a Stolnik of Bracławice or Łowczy of Brześć. Brzoska, reluctant to return a great sum of money to him lent by Łyszczyński, accused the latter of being an atheist and gave the aforementioned work as evidence to Witwicki, bishop of Poznań. Brzoska also stole and delivered to the court a handwritten copy of De non existentia Dei, which was the first Polish philosophical treatise presenting reality from an atheistic perspective, and which Łyszczyński had been working on since 1674. Witwicki along with Załuski, bishop of Kiev, took up this case with zeal. The King attempted to help Łyszczyński by ordering that he should be judged at Vilna, but this could not save Łyszczyński from the clergy. Łyszczyński's first privilege as a Polish noble, that he could not be imprisoned before his condemnation, was violated. The Łyszczyński case was brought before the diet of 1689 where he was accused of having denied the existence of God and having blasphemed against the Virgin Mary and the saints. He was condemned to death for atheism. The sentence was carried out before noon in the Old Town Market in Warsaw, where his tongue was pulled out followed by a beheading. After that, his corpse was transported beyond the city borders and cremated.
Bishop Załuski gave the following account of the execution:

After recantation the culprit was conducted to the scaffold, where the executioner tore with a burning iron the tongue and the mouth, with which he had been cruel against God; after which his hands, the instruments of the abominable production, were burnt at a slow fire, the sacrilegious paper was thrown into the flames; finally himself, that monster of his century, this deicide was thrown into the expiatory flames; expiatory if such a crime may be atoned for.
De non existentia Dei

Łyszczyński wrote a treatise entitled "De non existentia Dei" (the non-existence of God), which stated that God does not exist and that religions are the inventions of man.

On the basis of a public accusation, a trial at the front of the Sejm Commission was conducted. There is an actual transcript of the proceedings in a Library of Kórnik, including a speech by the Grand Duchy of Lithuania Instigator Regni Szymon Kurowicz Zabistowski, in which he cited fragments of De non existentia Dei. The treatise itself was destroyed by the diet but the cited fragments that survived are as follows:

During his trial, Łyszczyński claimed that the work was to be about a Catholic and an atheist having a debate, in which the Catholic would eventually win (he told the diet that the work would have had a different title from De non existentia Dei). The atheist was to speak first followed by the Catholic. He claimed that he only wrote the first half of the work (that is only the atheist's argument) and then stopped writing at the advice of a priest.
Status in modern Poland
Regardless of whether Łyszczyński was genuinely an atheist, in communist Poland he came to be celebrated as a martyr of the atheist cause. In a series of papers, Andrzej Nowicki presented a romanticized view of Łyszczyński, stating that "in terms of breadth of intellectual horizons, the thoroughness of philosophical erudition and the boldness of thought, he was beyond doubt the most eminent Polish mind of the epoch."
In March 2014, his persona and ideas were the key theme in a public performance during the 2014 Procession of Atheists in Poland.