"How do you distinguish a researcher from a research salesman?"
A salesman loves large quantity: many students, many grants, many papers (mostly through loose collaborations).
A researcher likes quality and thoroughness.
A salesman goes to conferences to promote his work at the corridors and to make new "alliances."
A researcher goes to conferences to hear about new ideas, ask questions, brainstorm with others.
A salesman runs after every new hype, "hot problems", the funding carrot.
A researcher is driven by inspiration, new ideas, real-world problems.
A salesman avoids conflicts and wants to play friends with everyone (and especially with influential people).
A researcher does not hesitate to question authority and to go against the mainstream ideas of his/her time.
A salesman thinks of research collaborations as "strategic alliances." The more you have, the better.
A researcher works very closely with few collaborators at any point in time - the end-result should be larger than the sum of the parts.
A salesman evaluates the research of others in a binary way: if it is done by people of the same clique, it must be good research.
A researcher evaluates each research paper without asking who the author is.
A salesman makes sure that his work is known to all influential people by giving a sales pitch on every occasion.
A researcher believes in the circulation of research results through conferences, journals and the Web.
A salesman thinks that he knows everything that he needs to know.
A researcher never stops studying, including subjects from other disciplines.
A salesman talks a lot.
A researcher mostly listens.