Inquisitors engaged in mass censorship across the Iberian and Italian peninsulas; however, the effect it had on scholarship is debated. To test the effect of inquisitorial control a database of more than 2,000 top-tier mathematicians, scientists, authors, artists, and composers was created for 16 European countries from 1000 to 1749. Italy and Iberia had large declines of high-level scholars shortly after the establishment of the inquisitions. In contrast, other countries—both Protestant and Catholic—had increases in top-level scholars. Even though other countries had book burnings, religious persecution, and intolerance, the presence of an institution that became intolerant and oppressive significantly impacted the location of scientists and other top achievers throughout the sixteenth and seventeenth centuries.