Book excerpt: One cannot know anything about what is in the natural world until one is presented with it; but how one views what is thus presented depends on one's worldview and logical sagacity. Our actions,whether past, present, or future, were, are, and will be regulated by causes and their effects as manifested in events; in fact, our personal identities are defined by the events in our lives and by our worldviews. Young people should be acquiring discriminating skills to guide their thinking and to calculate their actions on these matters early in their lives, instead of being distracted by contrived trivialities and submitting their minds to manipulation by persons who are promoting their versions of the world that serve only their own vested interests.