"At twenty-one, so many things appear solid, permanent, untenable"

In this quote, Orson Welles is reflecting on the viewpoint of a twenty-one year old. He recommends that at this age, many things appear specific and unchangeable. The individual might seem like they have a clear understanding of the world and their place in it. Nevertheless, Welles likewise utilizes the word "illogical" which implies that these beliefs and understandings might not be sustainable or able to stand up to challenges. This could be analyzed as a warning to not become too rigid in one's believing at a young age, as there is still much to find out and experience in life. Overall, Welles is highlighting the naivety and prospective fragility of a twenty-one year old's perspective.