In the opinion of many of his biographers, it was an expression of uncontrolled rage, an evident congenital inheritance transmitted to his oldest son, that compelled him to flee from Mohra, the family seat, to escape the penalty or odium of homicide.
His philosophical studies were no doubt made under Jodocus Trutvetter von Eisenach, then rector of the university, and Bartholomaus Arnoldi von Usingen.The former was pre-eminently the Doctor Erfordiensis , and stood without an admitted rival in Germany.There is no reason to doubt that Luther's monastic career thus far was exemplary, tranquil, happy ; his heart at rest, his mind undisturbed, his soul at peace.The metaphysical disquisitions, psychological dissertations, pietistic maunderings about his interior conflicts, his theological wrestlings, his torturing asceticism, his chafing under monastic conditions, can have little more than an academic, possibly a psychopathic value. Unfortunately Luther himself in his self-revelation can hardly be taken as a safe guide.His father once beat him so mercilessly that he ran away from home and was so "embittered against him that he had to win me to himself again." His mother, "on account of an insignificant nut, beat me till the blood flowed, and it was this harshness and severity of the life I led with them that forced me subsequently to run away to a monastery and become a monk." The same cruelty was the experience of his earliest school-days, when in one morning he was punished no less than fifteen times.
The meager data of his life at this period make it a work of difficulty to reconstruct his childhood.
He himself alleges, as above stated, that the brutality of his home and school life drove him into the monastery.
Hausrath, his latest biographer and one of the most scholarly Luther specialists, unreservedly inclines to this belief.
Oerger ("Vom jungen Luther", Erfurt, 1899, 27-41) has proved the existence of this friend, his name of Alexius or Alexis, his death by lightning or assassination, a mere legend, destitute of all historical verification.
Kostlin-Kawerau (I, 45) states that returning from his "Mansfeld home he was overtaken by a terrible storm, with an alarming lightning flash and thunderbolt. Anna, I will be a monk '." "The inner history of the change is far less easy to narrate.
Luther's sudden and unexpected entrance into the Augustinian monastery at Erfurt occurred 17 July, 1505.