With the advent of the printing press invented by Johannes Gutenberg in the 15th century, which resulted in cheaper and more abundant books, and with the contemporaneous economic, social and political changes of the Renaissance, book collecting received a great impetus. Jean Grolier, the Treasurer-General of France, was an important bibliophile and book collector of this period. Grolier owned a library of 3,000 volumes and was known for his love of the Latin classics and of richly decorated bookbindings. He was a patron of the Aldine Press that had been founded by the prominent Renaissance printer, typographer, editor and publisher Aldus Manutius the Elder.