“Seth material” search engine (Jane Roberts)

Since it is formed by beliefs held by natural creatures, culture is, as Ruburt states, as natural as your physical environment. Once you are born into a particular time and country, you do grow up in an almost invisible but definite environment of concepts, assumptions, and predetermined ideas that serve as a basis from which your own individual beliefs spring. There is a constant give-and-take between any individual and his cultural system.

Now while this journey went on, and while he traveled through systems, disregarding, finally, one series of beliefs after another, he still carried to some degree certain basic root assumptions, held in different ways by all of those systems. Still carrying some of these himself, and with my help, he began a study of the nature of belief itself.

Ruburt suddenly found himself then exploring very strange grounds indeed—and without the earlier sustaining hope. For all the recognized systems were wanting. He did not have to examine each one minutely, for his abilities, after some familiarization, left him with the knowledge of their merits. The stated discernible hypotheses of the various systems are one thing—but their invisible root assumptions are something else. Ruburt tried to put his understanding to practical use in terms of daily life, your relationship, work, finances, his classes, yet he found himself with definite physical hassles. You have encountered them through your relationship with him. In certain areas you both have blazed ahead. Those deeply seated, invisible, cultural assumptions still operated, however. Some of them you both dismissed for the very simple reason that they never temperamentally suited you to begin with. Others you dismissed because you grew in wisdom.

The self is not trustworthy. That is another root assumption behind all of your systems, and here Ruburt was experimenting with that self.