This article takes as its starting point the premise that it
is possible to make true statements about the past and that it
is the historian’s task to make such statements, but that it
is not possible to do so unless we systematically distrust the
testimonies left to us by witnesses to past events. For this
reason, the article defends the claim that historical source
criticism is a meaningful and necessary part of the professional
enterprise of historians. Unfortunately, over the last couple
of decades, source criticism has gradually become less practiced
in our profession and has today been pushed to the margins of
Swedish historiography. It needs to be restored to its central
position, but it also needs to be modernised in the light of
new trends and new conditions of historical research. Basically,
source criticism has to be used as a tool for intertextual as
well as intratextual analysis, aiding the historian as much in
her or his constructive work as in his or her critical task of
weeding out false information.