Communism: collective ownership of scentific output (findings, communication). (Contrast with CIA's view of free inquiry being compatible with _only_ capitalism)
Universalism: Scientific ideas/resources should be impersonal. Race/gender/etc should not matter because ideas should stand an their own. (Important: he was not saying that scientists _didn't_ take these ideas into account, just that they though one ought not. Relate to Benjamin and science masking prejudice.)
Disinterestedness: Motivation should not be personal gain. Rewards are granted for sticking to these ethos, not for producing specific things. Merton thought this protected science from fraud. (see: publish or perish, stem cell scandal)
Organized skeptecism: Everything is up for debate; critical look at everything.