Daily Archives: 28 September 2014

September 28, 1698


On this date, Pierre-Louis Moreau de Maupertuis was born at Saint-Malo, France. Maupertuis published on many topics, including mathematics, geography, moral philosophy, biology, astronomy and cosmology. In 1741, he published a book called Essai de Cosmologie, in which he introduced the concept of stronger animals in a population having more offspring, an idea that prefigured Darwin’s theory of evolution by natural selection a century later. Another important publication on natural history was Vénus Physique, published anonymously in 1745, in which Maupertuis wrote:

Could one not say that, in the fortuitous combinations of the productions of nature, as there must be some characterized by a certain relation of fitness which are able to subsist, it is not to be wondered at that this fitness is present in all the species that are currently in existence? Chance, one would say, produced an innumerable multitude of individuals; a small number found themselves constructed in such a manner that the parts of the animal were able to satisfy its needs; in another infinitely greater number, there was neither fitness nor order: all of these latter have perished. Animals lacking a mouth could not live; others lacking reproductive organs could not perpetuate themselves… The species we see today are but the smallest part of what blind destiny has produced…

In his book Systeme de la Nature (1751), he theorized on the nature of heredity and how new species come into being. He thought that speciation took place by chance events in nature, rather than by spontaneous generation as was believed at the time.

Some historians of science see this series of conjectures as an early version of the theory of evolution. Indeed, if Maupertuis had taken his conjectures forward and developed them into a more fully formed theory, he might now be recognised as putting forward the foundations of the theory of evolution. Darwin’s fame rests on being the first to develop and publish the concept as a well-supported scientific theory, rather than being the first to suggest the concept.

Despite his many accomplishments, Maupertuis was considered arrogant by many of his fellow countrymen. He became a target of German mathematician Samuel Koenig, who accused him of plagiarism, and of French author Voltaire, whose satirical writings about Maupertuis were so savage that Maupertuis eventually left France. In 1759, Maupertuis died in virtual exile in Basel, Switzerland, in the home of Swiss mathematician Johann Bernoulli.


September 28, 1838 (a Friday)

Charles Darwin by G Richmond.

On this date, Charles Darwin first had an insight into the mechanism of evolution in nature. He wrote in his autobiography in 1876:

In October 1838, that is, fifteen months after I had begun my systematic enquiry, I happened to read for amusement Malthus on Population, and being well prepared to appreciate the struggle for existence which everywhere goes on from long-continued observation of the habits of animals and plants, it at once struck me that under these circumstances favourable variations would tend to be preserved, and unfavourable ones to be destroyed. The result of this would be the formation of new species. Here, then, I had at last got a theory by which to work.

Below is the famous passage from Darwin’s notebook where these ideas were first recorded:

[Sept] 28th.[1838] Even the energetic language of «Decandoelle» does not convey the warring of the species as inference from Malthus.— «increase of brutes, must be prevented soley by positive checks, excepting that famine may stop desire.—» in Nature production does not increase, whilst no checks prevail, but the positive check of famine & consequently death..
…—The final cause of all this wedging, must be to sort out proper structure, and adapt it to change.—to do that for form, which Malthus shows is the final effect by means however of volition of this populousness on the energy of man. One may say there is a force like a hundred thousand wedges trying [to] force every kind of adapted structure into the gaps in the economy of nature, or rather forming gaps by thrusting out weaker ones.


  • Charles Darwin, The Autobiography of Charles Darwin 1809-1882 (London: Collins, 1958).
  • Charles Darwin, Notebook D [Transmutation of species (1838.07.15-1838.10.02)] 134e-135e.