Peter Abelard (/ˈæb.ə.lɑːrd/; Latin: Petrus Abaelardus or Abailardus; French: Pierre Abélard, pronounced: [a.be.laːʁ]; 1079 – 21 April 1142) was a medieval French scholastic philosopher, theologian and preeminent logician. His affair with and love for Héloïse d'Argenteuil has become legendary. The Chambers Biographical Dictionary describes him as "the keenest thinker and boldest theologian of the 12th Century".