The air is an extremely dangerous, jealous and exacting mistress. Once under the spell most lovers are faithful to the end, which is not always old age. Even those masters and princes of aerial fighting, the survivors of fifty mortal duels in the high air who have come scatheless through the War and all its perils, have returned again and again to their love and perished too often in some ordinary commonplace flight undertaken for pure amusement.
Winston Churchill