A chronicle of the years between 1100 and 1453 describes the Crusades, the Inquisition, the emergence of the Ottomans, the rise of the Mongols, and the invention of new currencies, weapons, and schools of thought.

An introduction to science and medicine during the earlier phrases of the scientific revolution.

Leonardo Bruni (1370Ð1444) is widely recognized as the most important humanist historian of the early Renaissance. But why this recognition came aboutÑand what it has meant for the field of historiographyÑhas long been a matter of confusion and controversy. Writing History in Renaissance Italy offers a fresh approach to the subject by undertaking a systematic, work-by-work investigation that encompasses for the first time the full range of BruniÕs output in history and biography. The study is the first to assess in detail the impact of the classical Greek historians on the development of humanist methods of historical writing. It highlights in particular the importance of Thucydides and PolybiusÑauthors Bruni was among the first in the West to read, and whose analytical approach to politics led him in new directions. Yet the revolution in history that unfolds across the four decades covered in this study is no mere revival of classical models: Ianziti constantly monitors BruniÕs position within the shifting hierarchies of power in Florence, drawing connections between his various historical works and the political uses they were meant to serve. The result is a clearer picture of what Bruni hoped to achieve, and a more precise analysis of the dynamics driving his new approach to the past. Bruni himself emerges as a protagonist of the first order, a figure whose location at the center of power was a decisive factor shaping his innovations in historical writing.

After its rediscovery in 1417, Lucretius’s Epicurean didactic poem De Rerum Natura threatened to supply radicals and atheists with the one weapon unbelief had lacked in the Middle Ages: good answers. Scholars could now challenge Christian patterns of thought by employing the theory of atomistic physics, a sophisticated system that explained natural phenomena without appeal to divine participation, and argued powerfully against the immortality of the soul, the afterlife, and a creator God. Ada Palmer explores how Renaissance readers, such as Machiavelli, Pomponio Leto, and Montaigne, actually ingested and disseminated Lucretius, and the ways in which this process of reading transformed modern thought. She uncovers humanist methods for reconciling Christian and pagan philosophy, and shows how ideas of emergent order and natural selection, so critical to our current thinking, became embedded in Europe’s intellectual landscape before the seventeenth century. This heterodoxy circulated in the premodern world, not on the conspicuous stage of heresy trials and public debates, but in the classrooms, libraries, studies, and bookshops where quiet scholars met the ideas that would soon transform the world. Renaissance readers—poets and philologists rather than scientists—were moved by their love of classical literature to rescue Lucretius and his atomism, thereby injecting his theories back into scientific discourse. Palmer employs a new quantitative method for analyzing marginalia in manuscripts and printed books, exposing how changes in scholarly reading practices over the course of the sixteenth century gradually expanded Europe’s receptivity to radical science, setting the stage for the scientific revolution.