Leo Strauss, Persecution and the Art of Writing:
It is a general observation that people write as they read. As a rule, careful writers are careful readers and vice versa. A careful writer wants to be read carefully. He cannot know what it means to be read carefully but by having done careful reading himself. Reading precedes writing. We read before we write. We learn to write by reading. A man learns to write well by reading well good books, by reading most carefully books which are most carefully written. (Quoted from Edwin Curley, Behind the Geometrical Method: A Reading of Spinoza's Ethics (Princeton University Press, 1988), p. ii.)
"We learn to write by reading." This is why reading good books is essential to becoming a good writer.

2. Disallowing comments from a particular person, or deleting an offensive, off-topic, or otherwise substandard comment, has nothing to do with censorship. People who think otherwise confuse censorship with lack of sponsorship. I am under an obligation not to interfere with anyone's exercise of legitimate free speech rights. But I am not under any obligation to aid and abet anyone's exercise of free speech rights, legitimate or illegitimate.
3. The Comments area is not an open forum for anyone to say anything about any topic. As the name implies, it is primarily for commenting on the author(s)' posts. But to comment on them, one must have read them. And if I have spent three hours on a post, a reader will not understand it in thirty seconds. Secondarily, the Comments area is to facilitate civil discussion between and among commenters as long as the discussion remains on-topic.
4. Some undesirables: The skimmers, those who cannot read but only read-in. The sophists who, abusing argument, argue for the sake of argument. The ideologues, those who are out for power, not truth. The uncivil. The illogical. The politically correct. Worst of all, perhaps, are those who exemplify the anti-Socratic property: those who think they know what they don't know. If Socrates was famous for his learned ignorance, these types are marked by their ignorant unlearnededness.