“For, as I have suggested, disruption of the unity of the self is not limited to the cases that come to physicians and institutions for treatment. They accompany every disturbance of normal relations of husband and wife, parent and child, group and group, class and class, nation and nation. Emotional responses are so total as compared with the partial nature of intellectual responses, of ideas and abstract conceptions, that their consequences are more pervasive and enduring. I can, accordingly, think of nothing of greater practical importance than the psychic effects of human relationships, normal and abnormal, should be the object of continues study, including among the consequences the indirect somatic effects.” – The unity of the human being”

“As this book will show, objectively defined races simply do not exist. Even Arthur Mourant realized that fact nearly fifty years ago, when he wrote: 'Rather does a study of blood groups show a heterogeneity in the proudest nation and support the view that the races of the present day are but temporary integrations in the constant process of . . . mixing that marks the history of every living species.' The temptation to classify the human species into categories which have no objective basis is an inevitable but regrettable consequence of the gene frequency system when it is taken too far. For several years the study of human genetics got firmly bogged down in the intellectually pointless (and morally dangerous) morass of constructing ever more detailed classifications of human population groups.”

“All love craves unity. As the highest peak of love in the human order is the unity of husband and wife in the flesh, so the highest unity in the Divine order is the unity of the soul and Christ in communion.”

“Is anyone human actually normal? I'm beginning to think being normal is actually abnormal.”

“Today, more than ever before, life must be characterized by a sense of Universal responsibility, not only nation to nation and human to human, but also human to other forms of life.”

“I would argue that it is not human fecundity that is overcrowding the world so much as the technological multipliers of the power of individual humans. The worst disease of the world now is probably the ideology of technological heroism, according to which more and more people willingly cause large-scale effects that they do not see and that they cannot control. This is the ideology of the professional class of the industrial nations—a class whose allegiance to communities and places has been dissolved by their economic motives and by their educations. These are people who will go anywhere and jeopardize anything in order to assure the success of their careers.”