"simple" could mean not complex (there are no ambiguities about life
as seen through the eyes of science), or simple-minded or simplistic (science
is incapable of appreciating the complexity that underlies existence).
"cell" could refer to the room of a hermit or holy person, but it might
also imply a mind trapped or imprisoned in a small space. There might
be also a hint of the cell the biologist studies (e.g. the knowledge of
"how every living thing was fathered" mentioned in line 5).