Hi, Misoshiru, and welcome to the Forum.
You asked,
"Could someone elaborate on the question of the difference in the believe of 'Atman' in Theosophical and Buddhist thought...?"--> I believe the basic concept of Atman in both Buddhism and theosophy are the same. (The Theosophical version, perhaps, is more complicated.) The main difference between Buddhism and Theosophy is that Theosophists believe in the Atman, while Buddhists do not.
"Is the idea of Skandas comparable to a continuity between Lives resulting in return or liberation to a Monad or 'Higher Spirit' in a theosophical sence?"--> No. Skandas are like seeds. Skandas are defined as groups of attributes.
"...within, or surrounding, every infant that is born there are potencies which arise when the proper conditions are furnished. The potencies are present due to causes which have been previously engendered. These causes, therefore, lead to the formation of attributes which eventually become manifest as traits or characteristics. These groups of attributes become joined together as the child grows, and in thus uniting become molded into an individual's character. Therefore Skandhas may be defined as the groups of attributes which unite at birth, and in their aggregation constitute the personality." (
The Divine Plan, by Geoffrey Barborka, pp. 416-418)
--> Skandas seem to be forms of karma.
"... the 'attributes (Skandhas) for [about-to-be born people] are already formed prior to its entry into the after-death states. Assuredly they must have been formed during life on earth...." (
The Divine Divine Plan, by Geoffrey Barborka, pp. 416-418)
--> Skandas, however, are not karma, per se. They are formed by our desires, plans, aspirations, etc., we have while alive.
"The result of a man's thoughts, desires, emotions, plans, hopes and aspirations during earth-life are implanted into the fabric of his being, by the man himself. As man thinks thoughts he fashions his thought-life. This thought-life flows on from day to day becoming an intimate part of himself, his own thought-stream. Into this thought-stream he is contiinually adding new thoughts. These are deposited into his thought-stream as thought-deposits. These thought-deposits or tendericy-seeds are imbeddded in the aura surrounding a person during life, and they aid in the formation of the day-to-day self. A person shows this day-to-day self to the world. It is that which he; has moulded together, resulting from his thoughts and deeds. In short, it is his personality. People become familiar with this personality. As the process continues throughout a lifetime, man is becoming what he longs for. In addition to'the personality that he is creating, he is actually forming his attributes for his next incarnaation on earth. And he is doing this in his daily living. These attributes remain dormant during the after-death states, but spring into life when physical birth takes place. Such is the significance of the term Skandhas." (
The Divine Divine Plan, by Geoffrey Barborka, pp. 416-418)
--> Skandas, then, are formed by our aspirations as we go through life. Let me give you an example that contrasts Skandas and Karma. If a person spends several lives in a row playing the piano, they most likely will show an interest and aptitude towards the piano in a subsequent life. Karma, however, may interrupt their piano-playing altogether, so that a more-important karmic debt can be repaid.
You asked,
"...though after each life the personality and ego itself might dissolve, the continuity of Karma and disposition in that which reincarnates as Skandas serves as an impermant aggregate which only forms an 'Anata' when one has attained the level of Arhat?"--> I assume you mean Anatta. I assume you are using the definition of Anatta as "not having a soul". I also assume you are using the definition of Arhat as someone who is just about to achieve Enlightenment. (This definition is used in Theosophy and Mahayana Buddhism, but is not used in Theravada Buddhism.) I do not see Skandas forming Anatta in an about-to-be-born Arhat. The state called Anatta would not apply to someone still in the midst of physical incarnations.
"Presumably because K.H. said he was at the level where he would keep his personality for dissolving upon reincarnation because he was at that level of attainment - Would this be applicable to any attainment in Buddhism?"--> No. It would only apply to someone at the Adept level. Adepts are said to "live" at about the Upper Mental Level. Because of this, they have complete control over their mental and astral bodies. As they move from incarnation to incarnation, their mental and astral bodies do not dissolve, but are maintained intact. To answer your question, "Would this be applicable to any attainment in Buddhism?" it would not apply to Beings higher than the Upper Mental Plane, as these Beings do not use mental nor astral bodies.
"Indeed - If Nirvana itself is the only reality - Is the conciousness in Nirvana the only true thing that could be deemed as 'Anata' in Buddhist thought?"--> I would not say Nirvana is the only reality! Above Nirvana is Parinirvana, and there are states of "reality" even higher than these. But you have asked a good question as to the type of consciousness we will experience in Anatta.
We need to discuss the difference in the definition of the word Anatta between Buddhism and Theosophy. Buddhism teaches Anatta is the extinguishing of the entire person. Theosophy does not. According to Theosophy, Anatta is the extinguishing of only the lower principles of man. This gets back to the idea of Atman. Theosophy says there is an Atman, while Buddhism does not. When the lower principles of a person are finally extinguished, according to Buddhism nothing is left, while according to Theosophy a perfected Atman is left.
Here is the definition of Anatta from Encyclopedic Theosophical Glossary.
http://www.theosociety.org/pasadena/etgloss/am-ani.htm"Anatta (Pali) [from an not + atta self, soul] Non-self, nonegoity; a Buddhist doctrine postulating that there is no unchanging, permanent self (atta, Sanskrit atman) in the human being, in contrast to the Upanishad view that the atman or inner essence of a human being is identic with Brahman, the Supreme, which pervades and is the universe. While Gautama Buddha stresses the nonreality of self, regarding as continuous only its attributes (the five khandas; Sanskrit skandhas) which return at rebirth, there is scriptural testimony in both Southern and Northern Schools that the Buddha recognized a fundamental selfhood in the human constitution."You are asking great questions. Please ask more!
Misoshiru, are you Japanese? Moshi Nihongo o wakareba, zehi, jibun no koto o oshiete kudasai.
— Nikku za Pairotto yori