Wanderer Among the Stars

A person cannot be subdued.
The thirst for freedom cannot be extinguished.
This is the main theme of the almost unknown contemporary domestic reader, but once extraordinarily popular science fiction novel by Jack London, whose hero, declared insane, actually possesses a remarkable gift of willpower to leave his physical body and wander through the most remote epochs and countries.
He does not need a time machine — he is the time machine himself.
Flesh may languish behind bars — but does it matter if the mind and spirit are free?..