"When I came out of the hospital with kind old Roulin I thought that there had been nothing wrong with me, but afterwards I felt I had been ill. Well, well, there are moments when I am wrung by enthusiasm or madness or prophecy like a Greek oracle on a tripod.. .Everyone suffers here either from fever, or hallucination, or madness, we understand each other like members of the same family."
January 1, 1970
https://en.wikiquote.org/wiki/Vincent_van_Gogh