The modern concept of the hero would not have been possible without the Renaissance. Previously, the Middle Ages had not looked favorably upon man 's achievements. Living under the shadow of human sin, the Roman Catholic scholars of medieval Europe stressed the afterlife. Greatness came from God, not man, so the true heroes of Christendom were the martyrs, missionaries and priests preparing for salvation. The Renaissance challenged this bleak vision. Part of the challenge came from 14th century Italy 's rediscovery of the classical literature of ancient Greece and Rome. The histories of Tacitus, the biographies of Plutarch, but above all the letters and speeches of the orator Cicero opened the classical world anew. What they all emphasized was man 's capacity for greatness.
It was the Italian poet Francesco Petrarca, known as Petrarch, who ushered in the new humanism. What excited Petrarch was the classical tradition of education — the aim of which, as Cicero had explained, was to cultivate not a narrow range of technical skills, but the single, noble virtue of manliness. This idea of virtus went on to inspire a Renaissance literature of advice books outlining what was needed to foster a well-rounded man. A manly man was proficient in warfare, scholarship, government, letters and even the art of seduction. In the city-states of 15th century Italy arose a new