Peter Abelard was a medieval French philosopher and theologian, born in 1079. He is best known for his work in scholasticism, a method of critical thought that dominated medieval universities. Abelard's most famous contribution is his book, Sic et Non, which presents conflicting opinions on theological questions, encouraging debate and analysis. Abelard was also known for his romantic relationship with Heloise, a brilliant scholar. Their love story became legendary, marked by passion and tragedy. Despite personal challenges, Abelard's intellectual legacy influenced later thinkers and shaped the development of philosophy and theology in the Middle Ages.