Patrick Matthew originated and then had published the first full explanation of macro evolution by the process of natural selection in his book "On Naval Timber and Arboriculture" (1831) and followed it up with his second book "Emigration Fields" (1839) in order to make the case for conquest and Anglo Saxon colonization of other people's lands by what he thought represented the best genetic and moral variety of human beings. Later Matthew would write to Darwin a confession of his selfishness and repentance for so doing. However, Darwin the plagiarist, serial liar and apex propagandist, who stole Matthew's theory, did no such thing. His sole aim was personal fame and he manipulated others to assist him in that endeavor by lying about Matthew's (1831) book and who he knew read it before he and Wallace copied the bombshell ideas in it and then claimed to have originated them independently of Matthew's prior publications.
