It is only possible to progress spiritually and maintain tranquility when circumstances seem to force the opposite, in the belief that man always has a choice, even if it is given as a psychological reaction or as an inner posture. Contrary to what it may seem at first, determinism does not tranquilize and can only generate anguish towards an uncontrollable future that will fall upon the one who considers it reasonable; therefore, the determinist feels impotent before forces alien to his will. Very different is the feeling of someone who knows that, no matter what happens to him, there will always be the possibility of a response.