Ellen G. White (1827-1915) is the most widely published Seventh-day Adventist author and is regarded as one of the church's three co-founders. Spanning more than 70 years, her ministry took her to several continents where she preached to thousands, helped to start churches, publishing houses, and medical and educational institutions. Guided by the Holy Spirit, she exalted Jesus and pointed to Scripture as the basis of one's faith. Ellen G. White wrote on a wide variety of spiritual and practical topics—such as the Bible, health, education, ministry, evangelism, prophecy, finance, publishing, management, relationships, and marriage. During her lifetime she wrote more than 5,000 periodical articles and 40 books; but today, along with compilations derived from 50,000 pages of manuscripts, more than 120 titles are now available in English and many more in other languages. Ellen White's life-changing introduction to successful Christian living—Steps to Christ—is her best known and most widely translated work, available in more than 165 languages. The 5-volume conflict of the ages series—Patriarchs and Prophets, Prophets and Kings, Desire of Ages, Acts of the Apostles, and The Great Controversy—covers Scriptural themes from Genesis to Revelation.