Using the dialogue form, a genre common in classical philosophical works, Galileo masterfully demonstrates the truth of the Copernican system over the Ptolemaic one, proving, for the first time, that the earth revolves around the sun. Its influence is incalculable. The Dialogue is not only one of the most important scientific treatises ever written, but a work of supreme clarity and accessibility, remaining as readable now as when it was first published. This edition uses the definitive text established by the University of California Press, in Stillman Drake’s translation, and includes a Foreword by Albert Einstein and a new Introduction by J. L. Heilbron.

    Yagyu Munenori was so widely renowned that he was appointed official sword instructor to two Tokugawa shoguns. (The position was always coveted by Miyamoto Musashi, but he never succeeded in gaining the post). Yagyu's style is known as the Shinkage-ryu style, for centuries the official style of the Tokugawa dynasty. His spiritual mentor was Zen priest Takuan. Here, Yagyu's Buddhist spirituality is clearly reflected in his central idea of the "life-giving sword" - the notion of controlling an opponent by the spiritual readiness to fight, rather than during the fight. His mastery of restraint and diplomacy made him a trusted political and military advisor to the shoguns. This book is a look into a master swordsman's thoughts on nonattachment and even non-violence.