The body is no more than an element in the system of the subject and his world, and the task to be performed elicits the necessary movements from him by a sort of remote attraction, as the phenomenal forces at work in my visual field elicit from me, without any calculation on my part, the motor reactions which establish the most effective balance between them, or as the conventions of our social group, or our set of listeners, immediately elicit from us the words, attitudes and tone which are fitting.