Truth in religion : the plurality of religions and the unity of truth
Rocks of ages : science and religion in the fullness of life
Psychology and religion
The Middle East : 2000 years of history from the rise of Christianity to the present day
Freedom : the courage to be yourself
The elements of physical chemistry
Cell and molecular biology : concepts and experiments
Religion in sociological perspective
The culture of conflict : Interpretation and Interests in comparative perspective
The origin of species : by means of natural selection or the preservation of favoured races in the struggle for life