For Dutch artists, Karel van Mander's "Schilderboeck" was meant not only as a list of biographies, but also a source of advice for young artists. It quickly became a classic standard work for generations of young Dutch and Flemish artists in the 17th century. The book advised artists to travel and see the sights of Florence and Rome, and after 1604 many did so. However, it is noticeable that the most important Dutch artists in all fields, figures such as Rembrandt, Vermeer, Hals, Steen, Jacob van Ruisdael, and others, did not make the voyage.