Most historians attribute the trend in homicides to a steady increase in self-control of the sort promoted by Protestantism, and necessitated by schools and factories. Historian Manuel Eisner has summarized the patterns from over 300 historical studies. The Early Modern period spans the centuries between the Middle Ages and the Industrial Revolution, roughly from 1500 to 1800, or from the discovery of the New World in 1492 to the French Revolution in 1789. The period is characterised by the rise to importance of science and increasingly rapid technological progress, secularised civic politics and the nation state. Capitalist economies began their rise. The early modern period also saw the rise and dominance of the economic theory of mercantilism. As such, the early modern period represents the decline and eventual disappearance, in much of the European sphere, of feudalism, serfdom and the power of the Catholic Church. The period includes the Renaissance, the Protestant Reformation, the disastrous Thirty Years' War, the European colonisation of the Americas and the European witch-hunts. Despite these crises, the 14th century was also a time of great progress within the arts and sciences. A renewed interest in ancient Greek and Roman led to the Italian Renaissance. The Renaissance was a cultural movement that profoundly affected European intellectual life in the early modern period. Beginning in Italy, and spreading to the north, west and middle Europe during a cultural lag of some two and a half centuries, its influence affected literature, philosophy, art, politics, science, history, religion, and other aspects of intellectual inquiry. The Italian Petrarch (Francesco di Petracco), deemed the first full-blooded Humanist, wrote in the 1330s: "I am alive now, yet I would rather have been born in another time." He was enthusiastic about Greek and Roman antiquity. In the 15th and 16th centuries the continuing enthusiasm for the ancients was reinforced by the feeling that the inherited culture was dissolving and here was a storehouse of ideas and attitudes with which to rebuild. Matteo Palmieri wrote in the 1430s: "Now indeed may every thoughtful spirit thank god that it has been permitted to him to be born in a new age." The renaissance was born: a new age where learning was very important. The Renaissance was inspired by the growth in the study of Latin and Greek texts and the admiration of the Greco-Roman era as a golden age. This prompted many artists and writers to begin drawing from Roman and Greek examples for their works, but there was also much innovation in this period, especially by multi-faceted artists such as Leonardo da Vinci.