This book is definitely not an easy read. But those who are seriously interested in philosophical history will find this book educational. Ernst Cassirer (1874-1945) is most noted for his books concerning historical philosophy and his accomplishments as a professor of such Universities as Hamburg, Yale, California, and Göteborg. Next to Burckhardt, Cassirer's work is considered by many to be the landmark in the history of Renaissance thought. The Renaissance, according to Cassirer, is a time of philosophical rebirth. Medieval thinkers evaluated and understood things of this world through a transcendence that always led up to God. Renaissance thought, on the other hand, tried to understand the intelligible through sense and reason, but all the while maintaining the idea of God. Thus, the Renaissance arguably represents the first step in modern scientific thought; moreover, the innovative thinkers of the 14th and 15th centuries paved the way for the Reformation. At the beginning of the 1300's, a new life in the liberal arts begins to occur - a movement or `spiritual renewal,' as Cassirer calls it. Major scholars such as Petrarch begin to question Medieval thought and scholasticism, a philosophical principle that used the mystical and intuitional methods of Augustine and Aristotle. Cassirer uses the ideas and doctrines of the religious humanist Nicholas Cusanus as the hallmark of Renaissance philosophy. In fact, the majority of the book concentrates on Cusanus, who Cassirer considers the most influential and greatest philosopher of that epoch. The cosmos according to Cusanus places God in the center of the world, therefore allowing each individual being to have an intimate and close relationship with God. Cassirer's parable of the Tegernsee Monks and the self-portrait of Rogier van der Weyden is a perfect allegory of Cusanus' theory. Later, during the Reformation, the Catholic Church had to abandon the thoughts of Cusanus because it placed too much emphasis on the individual. He believed God created man, but also gave us the power of intellect, which has an autonomous sphere of thinking that gives everything value. The greatest accomplishment of Cusanus is his creation of balance between ancient humanism and medieval religiosity. In the "De docta ignorantia," Cusanus explains how the universe is divided between the infinite (eternal) and the finite (worldly). The connecting link or `bracket of the world' that embraces the finite and infinite is Christ. But only through the individual salvation can the unification of the cosmos occur, so the importance of man and humanity without mediators such as the church and pope is stressed. Therefore, redemption is not seen as leaving an inferior world behind like in medieval thought, but instead the salvation of one's soul is what forms the cosmos. Cassirer's book effectively proves how the Renaissance was a time of revolutionary thought as compared to medieval times. However, it seems the author may have overestimated the power and influence that Cusanus had on Renaissance philosophy. This concentration on Cusanus' religious philosophy serves as a great foreshadowing of the Reformation, but more detail should have been given to the social and intellectual aspects which Cassirer did touch on briefly in chapter four.