Copleston's "History of Philosophy" series consists of nine volumes, each covering a distinct period or aspect of philosophical development. The series spans from ancient Greece to modern times, providing a rich and nuanced understanding of the evolution of Western philosophy. The volumes are:

Copleston’s index is legendary. If you only want to understand "The Soul" or "The One," the index will guide you to specific sections across different philosophers.

Plotinus and the influence of Greek thought on early Christianity.