I felt my energy revive, and said to myself, In spite of everything I shall rise again: I will take up my pencil, which I have forsaken in my great discouragement, and I will go on with my drawing. From that moment everything has seemed transformed for me.
Letter #136 to Theo (24 September 1880): van Gogh, V. (2011) The Letters of Vincent Van Gogh. Constable & Robinson Ltd, New York.