In Philosophy "Metaphysics" is the branch of Philosophy dealing with "being": how things exist, what things really are, what essence is, what it is 'to be' something, etc.
It converses with truths that have always been spoken in the world"...
Emerson is fairly well known-of as having been an influential writer and, as such, may be considered to have had many words at his disposal.
"It is poverty,not misery," replied Chuang Tzu.
Matthew, Chapter 5
The presentation of "Tripartite" Human Nature posited above, together with the assertion that the Sermon of the Mount might be held to feature "Themes" consistent with such, ( ~ or similar?), "Existential Tripartism," could prove to be rather controversial.
Given this possibility a full consideration of all of this is given on for the benefit of interested readers, but also to provide defensive argument against challenge from potential detractors!
Such defence would, undoubtedly, arise from the evidence on that page that not only, (very significantly), Jesus' central teachings and (significantly), Emerson, Pythagoras and Plato / Socrates but also, (very significantly), Islam, Hinduism-Vedanta, Buddhism and Sikhism, and (significantly), Shakespeare offer substantial implicit support to the presence of an already established, if largely unappreciated, universal recognition that an "Existential Tripartism" is present in all Human Beings.
A farmer went out to sow his seed.
Ancient, classical, Greek philosophy also evidences cogentsuggestions that Human Nature is complex:-
Plato was a pupil and friend of the greek philosopherSocrates.
Some fell on rocky places, where it did not have much soil.
For at this festival some men whose bodies had been trained sought to win the glorious distinction of a crown, others were attracted by the prospect of making gains by buying or selling, whilst there was on the other hand a certain class, and that quite the best class of free-born men, who looked neither for applause no gain, but came for the sake of the spectacle and closely watched what was done and how it was done: So also we, as though we had come from some city to a kind of crowded festival, leaving in like fashion another life and nature of being, entered upon this life, and some were slaves of ambition, some of money; there were a special few who, counting all else as nothing, ardently contemplated the nature of things.
It sprang up quickly, because the soil was shallow.
It would be ridiculous to imagine that the presenceof the spirited element in cities is not to be traced toindividuals, wherever this character is imputed to the people, asit is to the natives of Thrace, and Scythia, and generallyspeaking, of the northern countries; or the love of knowledge,which would be chiefly attributed to our own country; or the loveof riches, which people would especially connect with thePhoenicians and the Egyptians.
This then is a fact so far, and one which it is not difficultto apprehend.
No, it is not.
Still other seed fell on good soil.
Pythagoras, the story continues, replied that the life of man seemed to him to resemble the festival which was celebrated with most magnificent games before a concourse collected from the whole of Greece.