The subtitles of these books are significant in referring to a spiritual vision for modern man and the integration of experiment with experience in arriving at a coherent worldview. Both Max and Peter epitomised the Network approach of balancing rigour with openness, and indeed it was Peter who invited Max to join the Network after the initial meeting recommended writing letters to possible members.

At all stages, it is important to let go of fear and anger resulting in accumulating pain and leading to energetic instability. Richard shows how management of the emotions is a key in this respect, although the fulfilment of the ego’s needs and the soul’s desires is even more critical.

John Casey gives a magisterial overview of the Western eschatological tradition – death, judgement, heaven and hell – providing sympathetic and lucid summaries of a vast range of different and at times conflicting sources that is a real pleasure to read.

There is no doubt in my mind that the book is a seminal one for philosophy of science and should be much more widely known in the field. It consists of five parts, namely metaphysics beginning with Aristotle, anti-metaphysics, the existence of God, the metaphysics of Kant, and causation.

The author is surely correct in describing the collaboration between Krishnamurti (1895-1986) and David Bohm (1917-1992) as uncommon, since, as he points out, most collaborations take place within the same discipline. There is no doubt that they were both men of genius, deeply concerned with the human situation, its limitations and prospects.

The book is grounded in inter-spirituality and endorsed by Ravi Ravindra with its deeper exploration of the spiritual transformative journey, which is the primary purpose of religion – hence the term interspiritual rather than interreligious dialogue.