According to Chapter 18, should a Guru's teachings be kept secret, and what is the Guru's method of instruction?

Chapter 18 firmly refutes the idea that a Guru's teachings should be kept secret, calling it a "merely imaginary and a meaningless fuss." It provides the sage Budhakaushika as proof, who narrated his dream-vision of the Ram Raksha initiation to everyone for their enlightenment. The chapter describes the Guru's instructional method as one that avoids intellectual conflict, showing the true path to each person according to their specific worthiness. He is likened to monsoon rain clouds that lovingly shower the water of self-bliss on all, not just a select few.