I am reading a book at the moment called "Sagitarius Rising" about a WW1 pilot's adventures and his love of flying (highly recommended to those passionate about aviation)
I quote a part of the book where the author talks about instructors.
" A good instructor was, and still is, a pretty rare bird. It needs some guts to turn a machine over to a half-fledged pupil in the air and let him get into difficulties and find his way out of them. Instruction demands, besides, an ability to communicate oneself to another person (the secret of all good teaching), and not so simple as it sounds. Add to this great patience, the quality of inspiring confidence, and an extremely steady flying ability in the man himself, and it will be obvious that nobody need look down the nose of an instructor "
A small excerpt from an amazing book about flying.