On 21 September 1873, when deeply depressed and affected by alcohol, he ended a three-hour conversation at Queens' with his brother Charles and went to bed.
He found Horace covered in blood but conscious and able to utter his last words "Easy to die.
The inquest jury returned a verdict of suicide whilst temporarily insane, and he was buried at Fordington.
Some of Hardy's poems were dedicated to Moule, and it has been suggested that several characters and scenes in his novels were inspired by him.
Henry Knight in A Pair of Blue Eyes shares many of Moule's character traits.