Quality definitions are developed from the most general (philosophical) to the specific (education), and from the old (Greece) to the contemporary (USA). Quality as the essence of something that makes it different, to quality and technological innovation, endowed with good characters to be defined satisfier. The concept is vague Quality has many definitions as it relates to multilateral what he preaches. Emphasis is placed on the dimensions: functionality (from the relationship of elements, leading to talk of effectiveness or efficiency), product (individual or institutional capacity satisfaction), or the ratio of all elements (full individual development generating multifaceted contextual development). Today, mercantilism are important and ideological dimensions in the analysis of quality applied by certain institutions.