Isaac La Peyrère

Praeadamitae (1655): La Peyrère’s Latin Case for Men before Adam

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I read Isaac La Peyrère’s Praeadamitae in the 1655 printing. The book is in Latin. The quotes below are my own English translations from that copy. The page numbers are the printed numbers in the book.

For the English translation of 1656, see my review of Men before Adam. For the wider subject, see Who Are the Pre-Adamites?.

The book at a glance

ItemWhat the copy shows
TitlePraeadamitae, or "An Exercise on the twelfth, thirteenth and fourteenth verses of the fifth chapter of the Epistle of Saint Paul to the Romans"
AuthorIsaac La Peyrère (c. 1596 to 1676). His name is not on the title page.
Date"in the year of salvation 1655". No place and no printer on the title page.
Second partSystema theologicum, "A Theological System on the Hypothesis of the Pre-Adamites. The first part", also dated 1655, in five books
LanguageLatin
Copy I readA copy from the Biblioteca Nazionale in Rome, on the Internet Archive

What the title says

The title page is the whole thesis in one line:

By which the first men, made before Adam, are brought in.

Isaac La Peyrère, Praeadamitae, title page (1655), translated from the Latin by me
Isaac La Peyrère, Praeadamitae, title page (1655), translated from the Latin by me

He does not say that men lived beside Adam. He says that the first men came before him. Adam is a later man, not the first one.

The two parts

The book has two parts. The first is the Exercitatio, a short close reading of three verses of Paul. The second is the Systema theologicum, a full system built on the result.

The first chapter of the Systema sets out the key move. He reads “the law” in Romans 5 as the law given to Adam, not the law of Moses:

The verses of the Apostle. They deal in particular with original sin. The law in that place must be understood as the law of Adam, not the law of Moses.

Isaac La Peyrère, Systema theologicum, Book 1, Chapter 1, p. 1, translated from the Latin by me
Isaac La Peyrère, Systema theologicum, Book 1, Chapter 1, p. 1, translated from the Latin by me

If sin was in the world before that law, then a world without that law was there before Adam. People lived in it.

Chapter 8: neither against Christianity nor against Genesis

La Peyrère knew the danger of his idea. In chapter 8 of the Exercitatio he answers it head-on:

To hold that the first men were created before Adam goes against neither the Christian teaching nor the history of Genesis. Rather, it makes both clear. It agrees in every way with the histories and records of the nations.

Isaac La Peyrère, Praeadamitae, Chapter 8 heading, p. 25, translated from the Latin by me
Isaac La Peyrère, Praeadamitae, Chapter 8 heading, p. 25, translated from the Latin by me

The last sentence is the one I follow most. He brings in the long king lists and star records of the Chaldeans and the Egyptians. A short timeline from Adam cannot hold them. A world with people before Adam can.

The flood of Palestine

In Book 4 of the Systema he limits the flood of Noah. The words of Genesis, he says, are the language of prophecy:

Genesis made all of this larger, in the speech of prophecy and in an inspired way of speaking, to show that all men and beasts of the land of the Jews died in that flood, in which all Palestine was put under water.

Isaac La Peyrère, Systema theologicum, Book 4, p. 219, translated from the Latin by me
Isaac La Peyrère, Systema theologicum, Book 4, p. 219, translated from the Latin by me

This is a regional flood. It ends Adam’s line, except for Noah and his family. It does not end the peoples who came before Adam. I set this beside the many flood stories on this site in Utnapishtim, Ziusudra, and Noah.

What I take from the Latin book

ClaimWhereKind of source
The first men were made before AdamTitle pageBible reading
The law in Romans 5 is the law of AdamSystema, Book 1, p. 1Bible reading
The idea agrees with Genesis and with the records of the nationsExercitatio, p. 25Bible reading and ancient history
The flood covered Palestine onlySystema, Book 4, p. 219Bible reading

La Peyrère wrote as a theologian, not as an explorer. But his question is the one I ask on this site. Who was here before the story of Genesis starts? His answer is that the nations were. That leaves room for the older races in The Jinn, The Nephilim and the long numbers in The Numbers Before the Flood.

  1. Who Are the Pre-Adamites?: the wider subject, from early Islam to Bailly and Oahspe.
  2. Men before Adam (1656): my review of the English translation.
  3. Creation stories: origins and the world before Adam.

Published: 14 Oct 2026

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