‘I concede that one needs certain qualities to qualify as a student of the Upanishads: a clear, unprejudiced mind, sufficient intellectual capacity, and a sound body. A sick person does not have the energy to persist with such deep enquiry as is required in this process of self-study. Nor does an ailing body have the quality of patience, a great deal of which is required in this search. Therefore, the practice of yoga, a proper and healthy diet, and a certain peaceful mode of being is essential.’
