The preface quotes Dnyaneshwar Maharaj's verses on acquiring knowledge. Can you elaborate on the core instructions for a seeker presented in these verses?

The verses from Dnyaneshwar Maharaj, quoted in Chapter 0, provide a clear, step-by-step guide for a spiritual seeker aiming to attain knowledge. The core instruction is to engage in devoted service to the saints. This service is not superficial; the verses specify that one must surrender with their 'body, mind, and soul' at the Guru's feet and perform all service 'without ego.' The text suggests that service is the 'doorway' to the 'treasure of knowledge.' By following this path of selfless and complete surrender in service, the seeker becomes receptive, and the Guru will then impart the wisdom that 'will enlighten the heart' and ensure that 'doubts will not arise.'