Interesting? Yes hopefully. Plagiarism is "the unauthorized use or close imitation of the language and thoughts of another author and the representation of them as one's own original work." By definition, one can't plagiarize one's own writing. In the 1000+pages of stuff on the blog, it's true that some important ideas are emphasized more than once.

No, it is plagiarism. It is a blatant copy of Arthur Schopenhauer, "All truth passes through three stages: First, it is ridiculed; Second, it is violently opposed; and Third, it is accepted as self-evident."

Thanks for the reference. I've added a note..