Did Vincent van Gogh have any achievements?

We've been told by the art experts in the past of all the madness, afflictions and diseases, supposed worthlessness of his art, the disappointments concerning almost everything that he did or tried to do in life,.. which in fact does makes for some wonderment about this question. I'll see if I can enlighten the readers on a few findings most readily able to be looked up.

Vincent did speak four languages, Dutch, English, German and French. He worked as a art dealer In the most exclusive art galleries such as The Goupel Cie Gallery in London, Paris, Amsterdam, The Hague while selling prints of masters along with handling originals works of living and of dead artists. Mostly they were European artists he was selling for over 7 years while working for his art dealing uncle Cent, partners of the art galleries. After his so-called sacking, Vincent taught boys at a boarding school different languages for little money, room and board. He work at a book store, a Library, and I believe he work also at a Photography studio, some time within the ten years of his art career after that fateful career as a lay preacher man.

He supposedly produce more works than Rembrandt,... another famous Dutch artist, and is said just as good if not better of an artist. He could handle Light a dark along with being able to paint in the metamorphosis just as Rembrandt did.