Movement is life; without movement life is unthinkable.

If I hold a twenty pound weight, I cannot detect a fly landing on it because the least detectable difference in the stimulus is half a pound. On the other hand, if i hold a feather, a fly landing on it makes a great difference. Obviously then, in order to be able to tell the differences in exertion one must first reduce the exertion. Finer and finer performance is possible only if the sensitivity, that is, the ability to feel the difference is improved.

Ultimately, we become aware of most of what is going on within us mainly through the muscles.

Standing is harder than moving.

Learning to inhibit unwanted contractions of muscles that function without, or in spite of, our will, is the main task in coordinated action.

A brain without a body could not think.

Find your true weakness and surrender to it. Therein lies the path to genius. Most people spend their lives using their strengths to overcome or cover up their weaknesses. Those few who use their strengths to incorporate their weaknesses, who don't divide themselves, those people are very rare. In any generation there are a few and they lead their generation.