Firts of all, I' like to say that I totally understand the reasons for keeping the teachings, practices, ect. secret from "outsiders", but what's bothering me a little bit lately is the secrecy within the circle of "insiders". I mean, even within a group of practitioners following the same Guru and practicing the same technique(s), people are urged not to share their experiences or "achievements" resulting from their practice with each other. Now, I get the whole thing about ego and spiritual materialism, however, at the same time, I think it would be beneficial sometimes to hear at least a little bit about the progress and the experiences that more advanced practitioners have made.
Let's say you're practicing within a small sangha where everyone's doing the same practice, but you don't experience much "progress" or "results" from the practice you're doing. Now, if noone of your fellow practitioners is ever talking about his/her own experiences, you'll never know if anyone of them is actually benefiting from this practice at all. It could be that it's just you who doesn't seem to make any progress, but it also could be that the practice everyone's doing is just plain and simple infeffective. But without sharing any experiences with your fellows, you'll just never know for sure, especially since Gurus don't talk much about the results of their own practices neither.
In the Theravada tradition for example, people are urged not to talk about their personal progress as well, but (at least in my experience) you'll almost always find some advanced practitioners during a retreat or another gathering, who are willing to share at least a little bit of their experiences and their progress with a particular meditiation technique, which I always found to be very helpful and beneficial in the sense that these conversations allowed me to compare the experiences from an older practitioner with my own ones. But in vajrayana circles, you can have 100s of people practicing the same yidam practice for example, without ever knowing if anyone of them actually ever realized or mastered this practice at all. So if you're not experiencing much benefit from the particular practice(s) you're doing for yourself, you might end up surrounded by fellow practitioners from whom you too don't know if they're benefiting from this practice, and relying soley on a Guru who doesn't share much about his own progress with the practice he's teaching neither.
There are quite a few Vajrayana teachers out there, who, on the one hand, are urging their disciples strongly to keep the secrecy and not to share their experiences even with fellow practitioners, but, on the other hand, are willing to share these secret Vajrayana methods with virtually everyone who's willing to pay for it. And by this way, even a fraud who's teaching completely useless practices is able to continuously gather more and more disciples who never ever going to realize that all they are doing is wasting their time. And even if chances might be low that the Vajrayana teacher you're following is a fraud, it's still well known that this is the way many bogus cult leaders manage to keep their disciples following them. And even if your Lama is actually really a complete fraud, chances are high that you'll never going to know this because within the tibetan "Lama community" even the real and honest teachers generally tend to keep silent about the "bad apples" among them.
And honestly, I find the whole argument about keeping this kind of secrecy (within a community of practitioners) because of ego issues and spiritual materialism to be a little bit flawed. I met quite a few (western) Vajrayana practitioners who were constantly bragging with their sophisticated knowledge about the Dharma, so I don't think it would change much if these people were bragging with their "spiritual achievements" as well.
In the end, I think - at least in our modern time, in this modern world - the dangers of falling prey to a fraudulent spiritual teacher are way higher than the dangers of sharing some of our experiences and some insights on our progress resulting from our meditation practice(s) with our fellow practitioners.
Well, these are the things I'm thinking about at the moment, and I just wanted to share them here to see what other people here have to say about it.




