Peter Abelard (/ˈæbəlɑːrd/; French: Pierre Abélard; Latin: Petrus Abaelardus or Abailardus; c. 1079 – 21 April 1142) was a medieval French scholastic philosopher, leading logician, theologian, poet, composer and musician. In philosophy he is celebrated for his logical solution to the problem of universals via nominalism and conceptualism and his pioneering of intent in ethics. Often referred to as the "Descartes of the twelfth century", he is considered a forerunner of Rousseau, Kant, and Spinoza. He is sometimes credited as a chief forerunner of modern empiricism.