Jean-Baptiste Lamarck 1744-1829 Jean-Baptiste Lamarck, Evolution's seminal theorist.
When goods are increased, they are increased that eat of them...
Thomas Robert Malthus 1766-1834 The Curate with an interest in Population.
Charles Darwin 1809-1882 The English gentleman with manuscripts 20 years in the writing.
Alfred Russel Wallace 1823-1913 The remarkable investigator who was also a prod to publish.
Pierre François Verhulst 1804-1849 Pierre said 'Population growth isn't geometric, it takes a
  non-linear differential equation to mathmatically describe it.'

An Essay on the Principle of Population, as it affects the future improvement of society
with remarks on the speculations of Mr. Godine, M. Condorcet, and other writers.

by Thomas Malthus

The following Essay owes its origin to a conversation with a friend, on the subject of Mr Godwin's essay...

So begins Thomas Malthus' work "An Essay on the Principle of Population..." First published - 1798.