In his autobiography Confessions , Crowley praises Eckenstein in several passages , mentioning his gymnastic strength , including his ability to do one - arm chin ups .
He was one of the few people who readily climbed with magician Aleister Crowley .
In Aleister Crowley 's autobiography Confessions magician Aleister Crowley praises Eckenstein in several passages , mentioning his gymnastic strength , including his ability to do one - arm chin ups .
He was one of the few people who readily climbed with magician Aleister Crowley .