QUOTE : ...and it really was extremely sudden, the way it struck him that, good heavens, he understood nothing, nothing at all about anything, for Christ's sake, nothing at all about the world, which was a most terrifying realization, he said, especially the way it came to him in all its banality, vulgarity, at a sickeningly ridiculous level, but this was the point, he said, the way that he, at age 44, had become aware of how utterly stupid he seemed to himself, how empty, how utterly blockheaded he had been in his understanding of the world these last 44 years, for, as he realized by the river, he had not only misunderstood it, but had not understood anything about anything, the worst part being that for 44 years he thought he had understood it, while in reality he had failed to do so; and this in fact was the worst thing of all that night of his birthday when he sat alone by the river, the worst because the fact that he now realized that he had not understood it did not mean that he did understand it now, because being aware of his lack of knowledge was not in itself some new form of knowledge for which an older one could be traded in, but one that presented itself as a terrifying puzzle the moment he thought about the world, as he most furiously did that evening, all but torturing himself in an effort to understand it and failing, because the puzzle seemed ever more complex and he had begun to feel that this world-puzzle that he was so desperate to understand, that he was torturing himself trying to understand, was really the puzzle of himself and the world at once, that they were in effect one and the same thing, which was the conclusion he had so far reached, and he had not yet given up on it, when, after a couple of days, he noticed that there was something the matter with his head.