‘Nibbāna’ – the ultimate goal of the Buddhist, has been variously understood and interpreted in the history of Buddhist thought. One who earnestly takes up the practice of the Noble Eightfold Path for the attainment of this goal, might sometimes be dismayed to find this medley of views confronting him. Right View, as the first factor of that path, has always to be in the vanguard in one’s practice. In the interests of this Right View, which one has to progressively ‘straighten-up’, a need for clarification before purification might sometimes be strongly felt. It was in such a context that the present series of 33 sermons on Nibbāna came to be delivered.