Despite his other achievements, Owen is best famed for his writings. These cover the range of doctrinal, ecclesiastical and practical subjects. They are characterized by profundity, thoroughness and, consequently, authority. Andrew Thomson said that Owen makes you feel when he has reached the end of his subject, that he has also exhausted it. Although many of his works were called forth by the particular needs of his own day they all have a uniform quality of timelessness. Owen's works were republished in full in the nineteenth century. Owen is surely the Prince of the Puritans. 'To master his works', says Spurgeon, 'is to be a profound theologian.'