Analyze the metaphors used in Chapter 18 to describe the Guru and the Guru-disciple relationship.

Chapter 18 employs several evocative metaphors to illustrate the profound nature of the Guru and the dynamic between Guru and disciple. Firstly, a seeker approaching the Guru is compared to a 'doll made of salt' entering the ocean, which dissolves completely, signifying the loss of ego and merging with the divine. Secondly, the Guru is likened to 'rain clouds of the monsoon,' showering the 'water of self-bliss with love' upon everyone, highlighting his impartial and abundant grace. Finally, Chapter 18 describes the interaction between an attentive listener and a speaker, where a 'spring of love overflows in the heart,' signifying the mutual joy that characterizes a receptive spiritual exchange.