This series, depending on the words chosen, may in some cases or may not in many cases accept the hypothetical word roots assigned to terms by mainstream linguists, many of which are demonstrably false.
Rather, new facts, especially in genetics, demand revision of outdated concepts that have concentrated on the languages of Western Europe, contrary to the actual genetic and archaeological record. Be sure to first read Principles of Historical Language Reconstruction (PHILANGRECON).
The text of the above graphic, created with bubbl.us 2.0 beta, is:
THE ORIGIN OF IS "IS" © 2010 by Andis Kaulins
In proto-Indo-European, the "to be" concept of "is"
and related terms are derived from a basic
concept for "all that is" applied to "the self, the I".
The conventional etymology for the English term "is" from the Online Etymological Dictionary is: "O.E. is, from Gmc. stem *es- (cf. O.H.G., Ger., Goth. ist, O.N. es, er), from PIE *es-ti- (cf. Skt. asti, Gk. esti, L. est, Lith. esti, O.C.S. jesti), from base *es- "to be." O.E. lost the final -t-."
That etymology taken from mainstream sources does not hold water as an examination of the most archaic Indo-European languages, Latvian and Lithuanian, clearly proves, supported by the evidence of the Bantu words for "all" and "everything" in existence, i.e. the full ESSence of being. There was no original "T" at the end of what was ESSentially an ES- word.
African Bantu (Bukusu) -esi "all"; (Asu) ósè "all, everything"; (Basa) so "all"; (Kinyamwezi) ɔ́sɛ̀ "all"; (Yao) kòòsè "all". The Yao form shows the term gutturalized whence Bantu ku "man", kau "young man". Compare kungs ("sir") and kundze ("lady") in Latvian. In English, the words "all" (All in German means "space"), "area", and "are" are related forms coming from the "be" form of "is", such as Latvian ir ("is") and ārā "outside", i.e. the outdoor space as extensions of self, whence Hittite arha "away (from)".
es "I (the self)" in Latvian
viss "all, everything" Latvian
aš "I (the self)" Lithuanian
esu "am" in Latvian (being as a self-extension)
ēst "to eat", i.e. selfing,
German essen "to eat"
īst(s) "real, ex-ist-ing" in Latvian
(m)ūsu "our", (m)ēs "we" in Latvian
us in English
is in English
as in English
es "it" German
ist "is" German
ego "I" in Latin
est "is" in Latin
The widespread s-mobile prefix (the verbal prefix of "self-action", depending on language) as s-, š, z-, ž, sa-, ša si-, ši, su-, šu, aiz, iz-, uz- and variables.
In Hittite, es- is a denominative for "to become what the base word means", i.e. as (like -(n)ess).