Desiderius Erasmus developed his career as a humanist scholar after entering an Augustinian religious house and being ordained. Work for the bishop of Cambrai enabled study in Paris, where he supported himself partly through teaching. Travels in England brought him into contact with Thomas More and John Colet and strengthened his interest in reform through education and the study of Christian texts. His expanding network of patrons, printers, and correspondents allowed him to work across Europe rather than remain in a single institutional post.

Erasmus published the Adages, a collection of classical sayings, in an early form in 1500 and enlarged it repeatedly. Works such as De copia and the Colloquies helped students develop flexible and effective Latin. The Handbook of the Christian Soldier urged an inward, ethically serious religion rather than reliance on ceremonies alone. The Praise of Folly, written during a visit to More and published in 1511, used satire to expose vanity and abuses among scholars, clergy, rulers, and ordinary believers. Its irony prevents every statement by the fictional speaker from being treated as a direct declaration of Erasmus's views.

In 1516 he published an edition of the Greek New Testament with a revised Latin translation and annotations. Although the edition had limitations and was based on a relatively small manuscript base, it made textual comparison central to theological scholarship and influenced later translators. He also edited and translated writings of the Church Fathers and classical authors. His program linked accurate language, historical understanding, and the philosophy of Christ, advocating religious renewal through learning and moral conduct.

The Reformation transformed the reception of his work. Erasmus criticized ecclesiastical abuses but declined to join Martin Luther's break with Rome. His discussion of free will in 1524 drew Luther's forceful response and exposed their disagreement over human agency and salvation. Suspicion from both Protestant and Catholic opponents narrowed the space for his conciliatory approach. Based for substantial periods in Basel, he moved to Freiburg when Basel adopted the Reformation, then returned near the end of his life. He died in 1536. His career helped create the tools and intellectual expectations of Renaissance scholarship while showing the difficulty of pursuing moderate reform during confessional conflict.