A special person in the life of the great Vincent van Gogh was his brother, Theodorus. Throughout his life, he provided Vincent with moral and financial support in his desire to become an artist.

The correspondence between the brothers lasted nearly 18 years. These revealing letters, collected together, represent an incomparable human document: they open the door to the world of this brilliant madman, revealing not only the path of his development but also showing how a new language of painting was created that would have a timeless influence on 20th-century art.