 The Renaissance is considered here as a cultural movement which bridged two historical epochs, the Middle Ages and early modernity. There is notorious disagreement on the temporal boundaries of the Renaissance. One familiar view is that it covers the period from the middle of the fourteenth century to the end of the sixteenth. The Renaissance is closely linked to the rise of humanism as a style of thought, and humanism is often conceived of as a rival and antagonist of scholasticism. Recent scholarship has found less clear-cut boundaries between humanism and scholasticism than were formerly assumed, and this is also true for humanist and scholastic uses of probability-related terms. The whole range of Latin probability-related words was used by Renaissance humanists and medieval scholastics alike, with roughly similar meanings based on ancient precedent. In the period from 1200–1500, there were no great debates on probability; and what Renaissance authors, like their contemporaries, had to say about the subject fills a few lines at most in their works. Nonetheless, the differences between humanist and scholastic uses of probability should be noted. 