God cannot be known directly, but He can be known by means of His effects and by negation, in the same way our bodily eyes do not see themselves except through a mirror (DOS 225).
As he puts it in discussing certainty, "there is a spiritual light shed on intelligible things and the mind's eye, and this light is related to the inner eye and intelligible things in the way the bodily sun is related to bodily eyes and visible bodily things" (Rossi 1981, 240 241).
Rather, the demonstration concerned something we did not see with our bodily eyes, but what we had in mind all along, understanding it to be a triangle, with perfectly straight edges, touching a perfect circle in three unextended points, which are all perfectly equidistant from the center of the circle.
This pioneering new planning tool uses technology that has been extensively used and validated in academic research, combining three core bodily responses; eye tracking, facial coding and Galvanic Skin Response (GSR).
At the other end of the cognitive process, we find an equally interesting form of unity, what we might call unity of behaviour: our ability to coordinate our limbs, eyes, bodily attitude, etc.
Arnauld next takes up a criticism raised by Le Moine against the Cartesian account of sense perception, and this leads to the question, "whether it is the bodily movements [in the eye] that cause the perceptions in the soul; or whether they are only the occasion on which the soul forms [the perceptions] in itself; or whether God gives [the perceptions] to [the soul]" (Examen, OA, 38 146).
Consequently, other aspects of social interaction, for example, eye contact, bodily comportment, etc which can also have a significant influence on the content of the consultation, have not been included.
Keep a close eye on bodily actions like eye movements, shifting in the chair, yawning, etc.
The mind moves out of the darkness it is in to find a trace of its light, which stands to it as the sun stands to the eyes in bodily vision.
