The lectures in the present volume continue the themes of my 1964–65 Gifford Lectures entitled The Discipline of the Cave though only the last five lectures deserve the new title of The Transcendence of the Cave. In the opening lectures I have sketched an ontology an axiology and a theology which are purely phenomenological which do not describe any object otherwise than as it is constituted in and for our present this-world experience. In the lectures which follow I have definitely ‘stuck out my neck’ and attempted to construct a picture of transcendental experiences and their objects based solely on the premiss that such experiences must be such as to resolve at a higher level the many philosophical surds that plague us in this life: the philosophical perplexities e.g. concerning universals and particulars mind and body knowledge and its objects the knowledge of other minds etc. etc. What I have tried to work out could have been documented and confirmed by an immense amount of mystical and religious literature and experience but I have not appealed to such support. While I do not accept any form of the widely-held dichotomy between logical and empirical truth I do not wish as a philosopher to contribute to the merely empirical treatment of anything. If there is not an element of necessity of genuine logical structure in the construction of higher spheres of experience and their objects they are for me without interest or importance. I stand and fall further by the assumption not only that such a logical structure is discoverable but that it is inseparable from any logical structure whatever. These large claims go beyond what I can claim to have established in the present lectures but to the extent that I have been able I have tried to move in this direction.