Which doctrine was defined in the 14th century? Surely not the Energies/essences distinction. But yes, any doctrine that has been defined has been because it had to be.
As was pointed out by myself and others, the Essence/Energies doctrinal distinction was made in the 5th century. It came about due to various dyphysite, monophysite, and monothelite heresies.
Palamas is in many ways seen as the father of Hesychism, but that is a spiritual practice, and not doctrine. To call it doctrine is similar to calling the spiritual practices of Catherine of Sienna, or Thomas Aquinas, doctrine. Certainly they all reference doctrine, but they are not themselves doctrine. I don’t know if you had a chance to look in the Philokalia, rather than just at it, but if you did you’ll see it traces hesychism through to the Desert Fathers.
Exactly. He taught practice, not doctrine. Practices change, develop, new ones come into being without antecedent (rarely, but it happens). There is no issue with that. Doctrine is something else. Palamas, as far as I know, did not teach any novel doctrines.
Exactly what are you looking for? I had assumed you were talking about Energies/Essences - as it seems most others were - this has its start in the Natures of Christ discussed at Chalcedon (4th Council). Many of the Church Fathers of this time go into depth with the whole essence/energies idea. There are others here who are more knowledgeable than myself regarding the arguments put forth.
Hi 9-2 thank you for your response. I have been reading on awful lot about the Orthodox Church as of late. Before I came back to Catholicism, I did consider the Orthodox Church. Please understand that I am just trying to learn and am in no way challenging the correctness of Palamas’s doctrine. With that said I do have to take issue with the comment that the Catholics added to the faith. My positition is that these so called additions was merely doctrinal development which was arrived at in the same manner that the EO Church’s doctrinal development.
The Energies/essences distinction was defined and it became dogmatic in the 14th century. What Palamas preached was not the same thing that Basil wrote in his epistle 234. Read Basil’s epistle 234 if you have not (I am sure you have). The energies that he is referring to is not what Palamas taught.
I am assuming that when you said that you pointed out that the Essence/Energies doctrinal distinction was made in the 5th century you were referring to the Cappadocian fathers. I read Basil’s letters but I did not see anything that was written about that was what Palamas taught. Sure they used similar terms but not in the same manner that you are proposing here (at least in Basil’s letters.)
Why is saying that doctrinal development occurred in the EO Church so bad? The EO Church with such great thinkers could possibly not remained static in thought.
From my reading of St. Basil, there is not a linear connection between Basil’s energies and Palamas’s distinction theology.
but on the other hand, I am not calling Palamas’s teaching as an innovation by no means. If I made that impression I apologize.The EO Church deemed Palamas’s teachings as genuine development and consistent with tradition and that must be respected.
( and by the way I am loving the Philokalia!

I am reading this and the Dark Night of The Soul, and Upon this Rock…I cannot make up my mind which to stick to. I love them all.
But you know what my real point is? As an observer, an outsider looking in, I think that when it comes to doctrinal development, there appears to be a double standard. Palamas’s doctrine was made into dogma in the 14th century and the way that it was declared, to me, seems identical to CC doctrinal development. Not sure where else to go with this because it appears that we are going to disagree.
However, can you clarify one final point? So are you saying, (because my thick skull is hard to penetrate), based on your comments, must a doctrine/tradition be challenged before it is declared dogmatic?