The numerous evils to which individual persons are exposed are due to the defects existing in the persons themselves. We complain and seek relief from our own faults; we suffer from the evils which we, by our own free will, inflict on ourselves and ascribe them to God, who is far from being connected with them!
One should see the world, and see himself as a scale with an equal balance of good and evil. When he does one good deed the scale is tipped to the good - he and the world is saved. When he does one evil deed the scale is tipped to the bad - he and the world is destroyed.
When man possesses a good, sound body that does not overpower him nor disturb the equilibrium in him, he possesses a divine gift. In short, a good constitution facilitates the rule of the soul over the body, but it is not impossible to conquer a bad constitution by training.