“Artificial flight may be defined as that form of aviation in which a man flies at will in any direction by means of an apparatus attached to his body, the use of which requires personal skill. Artificial flight by a single individual is the proper beginning for all species of artificial flight, as the necessary conditions can most easily be fulfilled when man flies individually.” MenMayMeanUseBodyFormIndividualConditionsSkillsSpeciesFlightDefinedAviationArtificialFulfilled Author:Otto Lilienthal
“Condition and guts take over where knowledge and skill end.” EndsConditionsSkillsGuts Author:Ed Parker