The notion of common sense has been widely used in everyday speech and had its place within numerous philosophical doctrines in the past. One of the most comprehensive analysis of common sense was done by Thomas Reid. The problem is that Reid’s characteristics of common sense very often differ and that is why they are in most cases confusing. The aim of this paper is to organize Reid’s definitions of common sense and to show where we can find inconsistencies. Emphasis (...) will be placed on distinction between common sense and principles of common sense and if Reid’s doctrine of common sense serves its purpose – to be an argument against the scepticism of David Hume. (shrink)