Knowledge True and UsefulA radical shift took place in medieval Europe that still shapes contemporary intellectual life: freeing themselves from the fixed beliefs of the past, scholars began to determine and pursue their own avenues of academic inquiry. In Knowledge True and Useful, Frank Rexroth shows how, beginning in the 1070s, a new kind of knowledge arose in Latin Europe that for the first time could be deemed scientific. In the twelfth century, when Peter Abelard