Inasmuch as descartes seeks this subiectum along the path previously marked out by metaphysics, he, thinking truth as certainty, finds the ego cogito to be that which presences as fixed and constant. This binding adherence is the rigor of research,7 through the projecting of the ground plan and the prescribing of rigor, procedure makes secure for itself its sphere of objects within the? Science and reflection 1 in keeping with a view now prevalent, let us designate the realm in which the spiritual and creative activity of man is carried out with the name "culture.