Passage: As the 16th century was passing, the late humanism stepped beside Calvinism as a predominant school of thought; and figures like Paul Schede, Jan Gruter, Martin Opitz, and Matthäus Merian taught at the university. It attracted scholars from all over the continent and developed into a cultural and academic center. However, with the beginning of the Thirty Years' War in 1618, the intellectual and fiscal wealth of the university declined. In 1622, the then-world-famous Bibliotheca Palatina (the library of the university) was stolen from the University Cathedral and taken to Rome. The reconstruction efforts thereafter were defeated by the troops of King Louis XIV, who destroyed Heidelberg in 1693 almost completely.As a consequence of the late Counter-Reformation, the university lost its Protestant character, and was channeled by Jesuits. In 1735, the Old University was constructed at University Square, then known as Domus Wilhelmina. Through the efforts of the Jesuits a preparatory seminary was established, the Seminarium ad Carolum Borromæum, whose pupils were also registered in the university. After the suppression of the Jesuit Order, most of the schools they had conducted passed into the hands of the French Congregation of Lazarists in 1773. They deteriorated from that time forward, and the university itself continued to lose in prestige until the reign of the last elector Charles Theodore, Elector Palatine, who established new chairs for all the faculties, founded scientific institutes such as the Electoral Academy of Science, and transferred the school of political economy from Kaiserslautern to Heidelberg, where it was combined with the university as the faculty of political economy. He also founded an observatory in the neighboring city of Mannheim, where Jesuit Christian Mayer labored as director. In connection with the four hundredth anniversary of the university, the elector approved a revised statute book that several professors had been commissioned to prepare. The financial affairs of the...

Question: What happen during the 30 years war?
intellectual and fiscal wealth of the university declined