1. Shoumen
Migi arui wa hidari te nite uchi komi no koto.
Tegatana o motte (arui wa kobushi) teki o utsujutsu, tenchi no iki to jubun no iki to wa onaji mono de aru hazu dakara dosa mo inyou gacchi no waza o tegatana ni oyoboshite uchikomu."
This is the first part taken from page 5 (see picture below) of Budo Renshu written by Morihei Ueshiba Sensei and is an instruction on how to attack. I will now explain what it means.
"Tenchi no iki" is the breath of nature and "jubun no iki" is your own breath. However "tenchi no iki" and "jubun no iki" are actually the same thing because we are all a part of nature.
In Japanese, "iki" means 'breath' but in this sentence Ueshiba Sensei wants to convey that humans have the same origin as nature. We must therefore look next at how nature was created. There are of course many theories about the origins of nature and the Universe and probably Ueshiba Sensei's theory was influenced by Deguchi Onisaburo of the Omotokyo religion. Deguchi Onisaburo said that out of the void a point appeared and this point was surrounded by spirit and matter. Spirit and matter are the perfect opposites of each other. These two opposing parts are yin and yang. When these two parts joined, space and nature were born. Thus; according to this thinking; when two opposing parts join, new power is created. So, for example, with the union of a man and a woman, great power is created and a new life is formed.
To create power when attacking in shoumen uchi, spirit and body must join. That is to say, when attacking you must concentrate your spirit on your tegatana. The attacking movement must include spirit. This is very simple but very, very important. So from now on, when attacking in shoumen uchi, please try to remember this. It may be difficult at first, but please keep trying.
The dedication page from Budo Renshu; signed by Morihei Ueshiba Sensei as 'Moritaka Ueshiba', the name he took at that time. The date in the top left; March 1934; indicates the date on which the book was given to his uchi deshi, Moriyuki Imai. 
An original photo of the young Ueshiba Sensei, glued into the book.
Next month, I will explain how to do 'kamae of the spirit' and not just 'kamae of the body'.
