How did "The Fallacy of Success" fit into a broader trend in European thought?

Those fortunate enough to be acquainted with the work of Southern Catholic novelist Walker Percy might be surprised to learn that it was not for his novels that Percy thought he would be most remembered. It was rather for his "semiotics": his philosophical and scientific work on man’s language and use of symbols, not only in mundane communication, but also in the most profound intellectual acts of comprehension that have as their object the deepest realities of the universe. At its most radical, Percy’s work on language and symbolism deals with the essential nature of the created human intellect’s ability to penetrate - in however limited a way - to the depths of metaphysical reality. It is due to the profound significance of this question for all of reality as man confronts it that Catholics recognize the second person of the Trinity as the Word of God, by Whom all things were made.