The issue of Rav Avraham Abulafia seems to me to be important. [He was a well known medieval mystic who was quoted extensively by Rav Haim Vital and the Remak [Rav Moshe of Cardoba known as RavMoshe Cordovaro".]
I discovered him originally in the microfilms in the basement of Hebrew University, but since then all his books were printed.
Obviously his major thesis about the importance of unifications [thinking and saying of the Divine names] is known but there are many other very interesting side issues he brings up that are worthy of attention.
The thinking and "intending" of Divine Names for me was a very major issue at one time since I was praying with the Sidur of Sar Shalom Sharabi and his grandson. That is the small three volume Sidur HaReshash [in red] and the large Sidur HaReshash.[The large one five volumes was written by the grandson.] [That is usually not around but I found someone who lived at the very edge of Mea Shearim who sold it to me.]
The smaller Red Sidur Hareshash as far as i know was printed in Aram Zova [Syria] and is not the same as his grandson. Rav Mordehei Sharabi said the small one has mistakes. [None of which I found but after he said so I assume I must have missed them.] In any case, the larger one is much more reliable. [There are major differences, but as for mistakes? I have no idea what Rav Mordehei Sharabi meant.]]
I discovered him originally in the microfilms in the basement of Hebrew University, but since then all his books were printed.
Obviously his major thesis about the importance of unifications [thinking and saying of the Divine names] is known but there are many other very interesting side issues he brings up that are worthy of attention.
The thinking and "intending" of Divine Names for me was a very major issue at one time since I was praying with the Sidur of Sar Shalom Sharabi and his grandson. That is the small three volume Sidur HaReshash [in red] and the large Sidur HaReshash.[The large one five volumes was written by the grandson.] [That is usually not around but I found someone who lived at the very edge of Mea Shearim who sold it to me.]
The smaller Red Sidur Hareshash as far as i know was printed in Aram Zova [Syria] and is not the same as his grandson. Rav Mordehei Sharabi said the small one has mistakes. [None of which I found but after he said so I assume I must have missed them.] In any case, the larger one is much more reliable. [There are major differences, but as for mistakes? I have no idea what Rav Mordehei Sharabi meant.]]