Spontaneity is just acting directly - direct action on the part of the reality that we are, instead of indirect action that is action attributed to the instrument that transmits it.
The instrument, the psycho-somatic apparatus, carries out the action subject to the concepts of time, space and duality, which are its limitations, but the action alone exists, there is no actor (as has so often been pointed out), and the 'onlie begetter' of the action is our reality.
Such indirect action, normal action, is necessarily cumbersome, and frequently ineffectual, thoughts so transmitted in words are tortuous and ultimately untrue, but the act of the action and the meaning behind the words are real and ours - for the instrument is only an intermediary.
When we, as subject, speak or act directly, still via an instrument but not attributing to that instrument the authorship of the action or of the idea, which can only be ours - that is what we know as spontaneity.
Note: It is understood that the apparatus-object is an element of the full duality of subject-objects in consciousness, which we are in the dualistic aspect of Reality. But the subject, not the object, initiates action.
