Basically speaking, nothing works well without Aiki.
And he states that aiki is a technique ...
It is my experience that every technique, every waza has an essence, a certain substance. If you find this essence of a waza and adapt it to your own body, feelings, character, you can bring the waza to life. But still the waza is independent of you. It still exists without you.
I don't like the term "principle". Because I think what waza teaches is much more concrete and detailed than what I think, a principle is.