From an email on Jean Gebser from an acquaintance:

It is also important to understand that all of the structures of consciousness are active and integrating in the present moment, the ever–present origin. If you understand that you have a strong grasp on Gebser’s work, and you don’t get stuck applying the structures as if they are rational cookie–cutter patterns.

Gebser, of course, was a twentieth-century phenomenologist, a follower of Husserl, and one of the most important integral theorists of the twentieth century.