“Ultimately it was man's limited senses which established the boundaries of the world.”

“Nonmonogamous folks are constantly engaged in their relationships: they negotiate and establish boundaries, respect them, test them, and, yes, even violate them. But the limits are not assumed or set by society; they are consciously chosen.”

“A blind man's world is bounded by the limits of his touch; an ignorant man's world by the limits of his knowledge: a great man's world by the limits of his vision.”

“Empathy, he once had decided, must be limited to herbivores or anyhow omnivores who could depart from a meat diet. Because, ultimately, the empathic gift blurred the boundaries between hunter and victim, between the successful and the defeated.”

“That all opposites—such as mass and energy, subject and object, life and death—are so much each other that they are perfectly inseparable, still strikes most of us as hard to believe. But this is only because we accept as real the boundary line between the opposites. It is, recall, the boundaries themselves which create the seeming existence of separate opposites. To put it plainly, to say that "ultimate reality is a unity of opposites" is actually to say that in ultimate reality there are no boundaries. Anywhere.”

“True religion is that relationship, in accordance with reason and knowledge which man establishes with the infinite world around him, and which binds his life to that infinity and guides his actions.”