The common-sense tradition holds that among the things we know are various facts about the external world and some epistemic facts – for example, that we know there are other people, that people know their names, and that we know that they know their names. This chapter makes two claims. First, that the common-sense tradition should include among the things known various common-sense moral claims as well as various particular moral claims that are no less evident. Second, that these moral claims are more reasonable to believe than any philosophical view that implies either that they are false or that we do not know them. In short, it suggests that the common-sense philosopher should treat some moral claims as having the same weight as some epistemic claims and claims about the external world. The last three sections consider some philosophical objections to this view. These include the objections that no evaluative claims are true or false, that we cannot know particular moral claims without knowing some general moral criterion, and that the appeal to our moral intuitions is illegitimate in philosophical inquiry.