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.

Our breathing reflects every emotional or physical effort and every disturbance.

We have more experience of movement and more capacity for it than of feeling and thought... We know much more about movement than we do about anger, love, envy or even thought. It is relatively easy to learn to recognize the quality of movement than the quality of other factors.

People confound, misuse, interchange thinking and speaking, not realizing that speaking is for communication and thinking is for action.

What you truly learn best will appear to you later as your own discovery.

No matter how closely we look, it is difficult to find a mental act that can take place without the support of some physical function.

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