Scientists are educated from ...

Scientists are educated from a very early time and a very early age to believe that the greater scientist is the scientist who makes discoveries or theories that apply to the greatest ambit of things in the world. And if you've only made a very good theory about snails, or a very good theory about some planets but not about the universe as a whole, or about all the history of humankind, then you have in some sense accepted a lower position in the hierarchy of the fame of science as it's taught to you as a young student.
 Richard Lewontin

Quotes from the same author

My general impression about people like Steve Gould and Carl Sagan and so on is that when they disappear as individuals and are no longer appearing on the stage and they are no longer writing, that their lifetime of acknowledgement by the general reading public is not very long... There were many people in the 19th century who were equally famous people who gave working man's lectures, supporters of Darwin, we as scholars know their names but the general public never heard of them.
 Richard Lewontin
The general public doesn't know and probably doesn't care about punctuated equilibria nor indeed should they, or the greenhouse effect on some other planet - they barely have the ability to cope with the greenhouse effect on their own planet. So I think you have to distinguish between the broad visibility of a scientist when he or she is speaking to a general public and trying to address general issues and the continued position that a scientist may have into the history of a particular subject.
 Richard Lewontin
Evolutionists ... have a prior commitment, a commitment to materialism. It is not that the methods and institutions of science somehow compel us to accept a material explanation of the phenomenal world, but, on the contrary, that we are forced by our a priori adherence to material causes to create an apparatus of investigation and a set of concepts that produce material explanations, no matter how counter-intuitive, no matter how mystifying to the uninitiated. Moreover, that materialism is absolute, for we cannot allow a Divine Foot in the door.
 Richard Lewontin
We take the side of science in spite of the patent absurdity of some of its constructs, in spite of its failure to fulfill many of its extravagant promises of health and life, in spite of the tolerance of the scientific community for unsubstantiated just-so stories, because we have a prior commitment, a commitment to materialism... We cannot allow a Divine Foot in the door.
 Richard Lewontin
The primary problem is not to provide the public with the knowledge of how far it is to the nearest star and what genes are made of .. Rather, the problem is to get them to reject irrational and supernatural explanations of the world, the demons that exist only in their imaginations, and to accept a social and intellectual apparatus, Science, as the only begetter of truth.
 Richard Lewontin