The phrase
Wesleyan Quadrilateral was coined by American Methodist theologian
Albert Outler (1908-1969) to describe how
John Wesley (1703-1791), co-founder of Methodism, organized belief. The four parts are as follows.
1. Scripture - core beliefs which are primary
2. Tradition - passed down through the ages
3. Reason - to logically and rationally defend the doctrine
4. Christian experience - some weaken this to personal experience
It appears that problems can arise when lower level aspects such as
experience are used to take precedence over what
scripture appears to clearly state.
These lower-level ideas (2, 3, 4) were to be used
only when scripture (1) itself was not clear.