Does Chapter 18 advocate for keeping a Guru's teachings secret? Explain the chapter's stance.

No, Chapter 18 strongly refutes the idea that a Guru's teachings should be kept secret. The text dismisses this notion as "merely imaginary and a meaningless fuss." It argues that instructions from a Guru, even those received in dreams, should be shared with everyone for their enlightenment. To support this view, the chapter cites the example of the sage Budhakaushika, who narrated his dream-vision of the Ram Raksha initiation to all. The underlying principle is that the Guru's wisdom is universal and not meant for exclusive possession.