Contrary to "value-free" social science (promoted by Max Weber),
"The serious and critical reader will not want a treacherous impartiality … but a scientific conscientiousness, which for its sympathies and antipathies — open and undisguised — seeks support in an honest study of the facts, a determination of their real connections, an exposure of the causal laws of their movement."
— Leon Trotsky, History of the Russian Revolution