“Remember that every science is based upon an abstraction. An abstraction is taking a point of view or looking at things under a certain aspect or from a particular angle. All sciences are differentiated by their abstraction.”

“In short, it is much easier to see a thing through from the point of view of abstract principle than from that of concrete responsibility.”

“Dr. P. may therefore serve as a warning and parable -- of what happens to a science which eschews the judgmental, the particular, the personal, and becomes entirely abstract and computational.”

“What is reasoning? It is the result of doing away with the vital distinction which separates subjectivity and objectivity. As a form of abstract thought reasoning is not profoundly dialectical enough; as an opinion and a conviction it lacks full-blooded individuality. But where mere scope is concerned, reasoning has all the apparent advantage; for a thinker can encompass his science, a man can have an opinion upon a particular subject and a conviction as a result of a certain view of life, but one can reason about anything.”

“All art is abstract, because art is an abstraction of the truth.”

“All representations of a thing are inherently abstract.”