Sextus Empiricus tells us that the sceptics conduct investigations. Genuine investigations are commonly taken to have some connection with the aim of discovering truth. Sextus also tells us that the sceptics aim at tranquillity in their investigations. But they do this only by suspending judgement. In what sense, then, are their investigations connected with the aim of discovering truth? This article argues that there is a sense in which Sextus can reasonably take sceptical investigations to be connected with the aim (...) of discovering truth, even though the sceptics only aim at preserving their tranquillity by suspending judgement. (shrink)