ちちと父と乳

Minor corrections are welcome!

Your comment sounds interesting, but Google translate couldn't translate your text well.

I will try to say that again in English:

　You can find a breast even on your father. The father's breast may be slightly difficult to be found than the mother's.
　Setting it aside...

　They say, both words "chichi(父: father)" and "chichi(乳: breast/milk)" are repeating each meanings of "chi(父 or 乳)".
　Having the same sound of "chi", there is a word "chi(血: blood)", too: they might once have a common meaning in ancient Japanese.

　I'm not sure about it, but I suspect that the original "chi" means a "vital force that runs through the lives or generations."

　Speaking of "Inochi(生命/命)", it has also "chi", doesn't it?

One more thing.

I also suspect that "haha(母: mother)" is also a repeating word of "ha", and that "ha" means "haeru(生える: sprout or come out)" like "ha(葉: leaves)" and "ha(歯: teeth)".

So, possibly the ancient Japanese considered, "chichi" gives a life to his children, and "haha" sprouts her children.

With the "vital force that runs through the lives or generations", is that the same thing as the word "qi", derived from Chinese language? http://en.wikipedia.org/wiki/Qi ?

I first learnt about the word as a convenient word in Scrabble. There aren't many words in English which use "q" without a "u" afterwards, but the word "qi" is an exception.

"Qi" is a Chinese word, and "qi" is pronounced like "ki" in Japanese.
"Ki" and "chi" are different sounds for Japanese.

But, your question is wonderful.
Surely "qi" has very close meaning to "chi".
Why so?
I don't have any idea.