I constructed a machine that I imagined was capable of taking me as high as I wanted to go. I launched myself into the air from the edge of a cliff. But I had miscalculated, and I crashed into the valley below.
I returned to my room, quite rumpled but not discouraged. I took some beef marrow and slathered it all over my body, which was bruised from head to toe. I fortified my courage with a bottle of cordial and went back for my machine.