Drat, too late to edit. A correction: Ki was explained as "a feeling", not "correct feeling."
Found the article.
At a recent aikido seminar (Kokikai Fall Camp, 1995, Arizona State University), Kokikai aikido founder Sensei Shuji Maruyama continually stressed that ki should be approached as simply "a feeling." In aikido, a feeling of correctness, good posture--a natural, relaxed yet active state(17 )-- not a mysterious magical element. He demonstrated the absurdity of "magical ki" in several ways: once by pretending to exert an invisible force through his hand to stop an attacker, and another by mimicking a person desperately worrying about an aikido test, hoping for divine intervention through ki power.