Religion and Society
(1978)
Prefazione (2 pp.)
(1978)
Prefacio
(1967)
Preface to Philosophy and Revolution, New York (Columbia University Press), 1989, pp xxi-xxii.
(1981)
Preface (Korean)
(2016)
Preface
(1962)
Preface
(1965)
Preface
(1966)
Introduction in Adam Schaff >Marxism and the Human Individual< (Typescript for publication, 8 pp.)
(1970)
Introduction
(1948)
Introduction
(1965)
Introduction
(1965)
Introduction
(1965)
Introduction
(1968)
Introduction
(1970)
Introduction
(1970)
Introduction
(1970)
Introduction
(1975)
Introducción
(2007)
Introducción
(2003)
Introducció
(2009)
Foreword II
(1965)
Foreword (Typescript, 2 pp.)
(1978)
Foreword
(1959)
Foreword
(1960)
Foreword
(1964)
Foreword
(1964)
Foreword
(1967)
Foreword
(1974)
Foreword
(1978)
et al.: Introduction
(1961)
Editorial
(1968)
Editorial
(1971)
Afterword
(1961)
A Nuestros Lectores
(1973)