‘Our greatest blessings come to us by way of mania, provided it is given us by divine gift,’ – says Socrates in Plato’s Phaedrus. Certain forms of alteration of consciousness, considered to be inspired by supernatural forces, were actively sought in ancient Greece. Divine mania comprises a fascinating array of diverse experiences: numerous initiates underwent some kind of alteration of consciousness during mystery rites; sacred officials and inquirers attained revelations in major oracular centres; possession states were actively sought; finally, some thinkers, such as Pythagoras and Socrates, probably practiced manipulation of consciousness. These experiences, which could be voluntary or involuntary, intense or mild, were interpreted as an invasive divine power within one’s mind, or illumination granted by a super-human being. Greece was unique in its attitude to alteration of consciousness. From the perspective of individual and public freedom, the prominent position of the divine mania in Greek society reflects its acceptance of the inborn human proclivity to experience alteration of consciousness, interpreted in positive terms as god-sent. These mental states were treated with cautious respect, and in contrast to the majority of complex societies, ancient and modern, were never suppressed or pushed to the cultural and social periphery.

Caves and the Ancient Greek Mind analyses techniques of searching for ultimate wisdom in ancient Greece. The Greeks perceived mental experiences of exceptional intensity as resulting from divine intervention. They believed that to share in the immortals' knowledge, one had to liberate the soul from the burden of the mortal body by attaining an altered state of consciousness, that is, by merging with a superhuman being or through possession by a deity. These states were often attained by inspired mediums, `impresarios of the gods' - prophets, poets, and sages - who descended into caves or underground chambers. Yulia Ustinova juxtaposes ancient testimonies with the results of modern neuropsychological research. This novel approach enables an examination of religious phenomena not only from the outside, but also from the inside: it penetrates the consciousness of people who were engaged in the vision quest, and demonstrates that the darkness of the caves provided conditions vital for their activities.

Using the work of Bruno Latour, this book reimagines ayahuasca as liquid divinity, asking fundamental ontological questions that shift the focus from ayahuasca experiences to ayahuasca-based ritual practices that aim at cultivating relationships with more-than-human powers, described by Latour as "beings of transformation and religion."

The Divine Madness of Philip K. Dick, written by a psychologist, investigates the inner world of the science fiction writer Philip K. Dick. In 1974, Dick was beset by religious visions, and warned police he was an android. The book explores whether Dick's experience was a spiritual awakening or caused by mental illness.

This book offers a comprehensive study of the views of ancient philosophers on mental disorders. Relying on the original Greek and Latin textual sources, the author describes and analyses how the ancient philosophers explained mental illness and its symptoms, including hallucinations, delusions, strange fears and inappropriate moods and how they accounted for the respective roles of body and mind in such disorders. Also considered are ethical questions relating to mental illness, approaches to treatment and the position of mentally ill people in societies of the times. The volume opens with a historical overview that examines ancient medical accounts of mental illness, from Hippocrates' famous Sacred Disease to late antiquity medical authors. Separate chapters interpret in detail the writings of Plato, Aristotle, Galen and the Stoics and a final chapter summarises the views of various strains of Scepticism, the Epicurean school and the Middle and Neo-Platonists. Offering an important and useful contribution to the study of ancient philosophy, psychology and medicine. This volume sheds new light on the history of mental illness and presents a new angle on ancient philosophical psychology.

The interpretation offered here focuses on Plato's thesis, which at first sight appears strange and unrealistic, that those experiences that advance human life to its true fullness are bestowed on us only during a "god-given" state of "being-beside-oneself". This thesis is then resolutely confronted with our contemporary and above all psychoanalytical knowledge of man's nature, as well as with the Christian conception of man's existence, thus revealing its amazing, unexpected relevance.