Some of Arthur's aero's would may have been inspired by sheer exuberance, but the majority probably came from just trying to stay alive. Here is the remnants of his effort after a bullet smashed it during combat.
The Story of the 'hole'.
See The Memorial Flight to look at a very fine SE5a restoration.
Perhaps the best WW1 aircraft restoration website on the web - is there a company anywhere that restores or reconstructs WW1 aircraft better than The Vintage Aviator Ltd?