In the same year that Darwin published his Origin of the Species, Louis Pasteur's expirements gave evidence that life arises only from pre-existent life.
Only in the sense that he demonstrated that maggots do not form spontaneously from dead meat. He said absolutely nothing about biogenesis.
Since structural organic chemistry was practically nonexistant at that time, Pasteur can hardly be cited as an authority as to what chemical reactions are and are not possible. All Pasteur demonstrated was that organisms identical to already existing organisms cannot spring into existence fully formed in a matter of months. This demonstration has no resemblance to the origin of life on earth.