Semyon Semyonovich, with his glasses on, looks at a pine tree and he sees: in the pine tree sits a peasant showing him his fist.
        Semyon Semyonovich, with his glasses off, looks at the pine tree and sees that there is no one sitting in the pine tree.
        Semyon Semyonovich, with his glasses on, looks at the pine tree and again sees that in the pine tree sits a peasant showing him his fist.
        Semyon Semyonovich, with his glasses off, again sees that there is no one sitting in the pine tree.
        Semyon Semyonovich, with his glasses on again, looks at the pine tree and again sees that in the pine tree sits a peasant showing him his fist.
        Semyon Semyonovich doesn't wish to believe in this phenomenon and considers this phenomenon an optical illusion.

        Daniil Kharms. Blue Notebook No. 10