Aiki (martial arts principle) and its practice is often kept within a particular individual or two from a family/school lineage. Culturally, and due to certain necessities of the time period, the aiki knowledge was usually a very well guarded secret and rarely disclosed. The oldest book to have historically discuss aiki was the 1899 Budo Hiketsu-Aiki no Jutsu. On the subject of aiki it was written: The Textbook of Jujutsu (Jujutsu Kyoju-sho Ryu no Maki) from 1913 wrote: Aiki (martial arts principle) Aiki from a Japanese budo term, at its most basic is a principle that allows a conditioned practitioner to negate or redirect
Who is a Jew? or spiritual practices. Other similar terms that have been used include: "part-Jewish" and "partial-Jews". The term "Gershom", "Gershomi" or "Beta Gershom" has also been used as an alternative to "half-Jewish" and "part-Jewish" in connection with descendants of intermarriage, Gershom being the son of Moses and his Midianite wife Zipporah. The term typically has no religious meaning, as terms like Jewish Christian do, but rather describes ethnic Jewry. The Society for Humanistic Judaism defines a Jew as "someone who identifies with the history, culture and fate of the Jewish people." In their view it is therefore possible for a non-religious individual