天之御中主神 is a phrase submitted by a customer.

I do not have information on the origin of this phrase.

心 would often be translated as “heart.”

However, because it was believed in Chinese culture for thousands of years that your consciousness and thoughts came from the big red organ in the middle of your chest, it also means “mind” or “spirit” and sometimes even “soul.”

In Korean, beyond heart, mind, and spirit, this character can mean moral, nature, mind, affections, intentions, core, and center. In fact, it is used in Chinese to mean “center” as well but only with another character in front of it. For instance, “medical center” or even “shopping center.” Separately and alone, it will not be read with that “center” meaning unless thought of as “the center of your soul.”

心の伴侶 is a Japanese-only title for soulmates.

心 means heart, soul, mind, core, or center. In ancient times, the heart was believed to be the mind or center of your soul and being.

の is a possessive article that connects everything here.

伴侶 means mates, companions, partners, and spouses.

This Japanese version of soulmates is about two partners, coupled or joined by their hearts.

This is Seichusen, the Japanese martial arts concept meaning “right/correct middle/center line/thread.”

天心道場 is the title Tenshin Dojo in Japanese Kanji.

The meaning of 天心 is the center of the sky, will of heaven, will of the Gods, the monarch's will, zenith, divine will, or providence.

中心合気道道場 is the name Chushin Aikido Dojo in Japanese Kanji.

The Japanese romanization, Chushin, can also be 忠心 (Loyal-Heart) or 中真 (True Center), so let me know if you need 忠心合気道道場 or 中真合気道道場 instead of 中信合気道道場.

太陽 is a two-character title for the Sun.

This refers specifically to Sol, the star at the center of our Solar system.

In Japanese, this is often romanized as Taiyou or Taiyo but can also be pronounced as the names Minami, Hiroaki, Hinata, Hikaru, Tsubasa, Tahi, Takayasu, Takaharu, or Soru.

孝心館 is the title for Koushinkan, Koshinkan, or Kōshin-Kan.

The romanization of this title varies a little, but the original characters are the same.

孝 = Filial piety or obedience.
心 = Heart, mind, intention, or center.
馆 = Building or establishment (dojo).

This can be pronounced in Chinese and has the same meaning, but you should consider this a Japanese martial arts title.

正道塾 is the martial arts school Seido Juku in Japanese Kanji.

正道 means the correct path or the right way (often used in the context of Buddhism).

塾 means private school or tutoring center. Just read it as “school” in the context of martial arts.

生活于繁榮中 means “live in prosperity.” It's kind of a suggestion to be prosperity the center of your world.

This is the way some people want to live (and you should always live for what you love). However, this phrase does not suggest a peaceful life - rather one that is always busy. It's not for everyone, but it might be for you.

See Also:  Prosperity

禪心 represents an image of your meditation coming from and filling your heart.

The meaning of the first character is “meditation” and the second character is usually defined as “heart” or sometimes “mind.”

There is a two-fold meaning here, as a good meditation session must start with a centered heart or mind. Yet at the same time, meditation serves to cleanse, focus, and center the heart and mind.

聖心会 is the Japanese martial arts title “Seishinkai” or “Seishin-Kai.”

It literally means “Sacred Heart Association” or “Pure-Heart Club.”

聖 can mean holy, sacred, saint, sage, virtuous, expert, wise and good, upright, or correct.
心 can mean heart, mind, center, core, spirit, soul, or vitality.

聖心 creates a word meaning sacred heart, or the holy mind (that of Buddha).
会 in Japanese means association, club, meeting, assembly, party, gathering, conference, athletic meet, or society.