Critical Thinking

I just received my copy of "Critical Thinking: Concepts and Tools" from CriticalThinking.Org.  The book (well really a booklet) provides an outline of how to think critically.  In other words, how to reason.  There is a quote near the end of the book that I particularly like:  "Education in the critical faculty is the only education of which it can be truly said that it makes good citizens." (William Graham Sumner, 1906).  I think that having citizens skilled in critical thinking would make the political process much easier to bear.