Vincent van Gogh cut off one of his ears.

The statement is true. Vincent van Gogh, a renowned Dutch artist, did indeed cut off a part of his ear. In 1888, Van Gogh experienced a severe mental breakdown and struggled with his mental health throughout his life. During one intense episode, he had an argument with his friend and fellow painter, Paul Gauguin, and in a fit of despair, Van Gogh mutilated his own earlobe with a razor. This incident is well-documented and serves as a tragic testament to the artist's tumultuous mental state and suffering.