Metropolitan Kallistos (Ware) of Diokleia –  (b. 1934) is a titular metropolitan of the Orthodox Ecumenical Patriarchate in Great Britain. From 1966-2001, he was Spalding Lecturer of Eastern Orthodox Studies at Oxford University, and has authored numerous books and articles pertaining to the Orthodox faith.

I ran across this essay by Met. (then Bishop) Kallistos (Ware).  I think that it is the most concise, complete, readable, and instructive summary of Orthodox theology, mysticism, hesychasm, and the Jesus Prayer I have ever read in a mere 20 pages.

Click on the graphic or the blue hyperlink below to open the document:

Met. Kallistos (Ware)-The Power of the Name