In False Truths, Edward C. Mendler contends that many of the beliefs, tenets, conclusions, and understandings that are widely accepted as "truths" are, in fact, not valid at all. Such dubious and false concepts arise not only in philosophy and theology but also under the rubrics of cosmology, quantum physics, democracy, freedom, economics, and various aspects of "human nature" and evolution. We accept and absorb these false ideas because they were and are propounded by "authorities," both ancient and modern. Mendler asserts that we should challenge them all -- from Plato on to contemporary theorists in all of those fields -- and question and analyze every element of their conclusions.