Is man incomprehensible to man?

Is man incomprehensible to man? by Rhinelander, Philip H. paperback edition. ISBN: 9780716707646.

There is no agreement today on the meaning of phrases like Human Nature or The Nature of Man, or even on whether they mean anything at all. Here is a thoughtful, contemporary survey of philosophy from Aristotle to McLuhan and Marcuse that never loses its focus on the issue: who is man? Central to the discussion is the view of Man as Inventor, the inventor of symbols as well as tools. This is a unifying vision, for "The highest powers of abstract thought depend on mans ability to construct and manipulate symbols."