Duels are becoming rarer and rarer, and if dolorous examples of them are still seen from time to time, their number cannot be compared to what it used to be. Formerly, a man could not leave his home without foreseeing an encounter, thus he always took precautions. A characteristic sign of the customs of those times and peoples was the habit of carrying concealed or unconcealed offensive or defensive weapons. The abolition of such usage demonstrates  the softening of customs, and it is interesting to follow this gradation, from the time in which knights did not ride out except covered in armor and clutching a lance to when men started carrying a simple sword more as a decoration and a blazon than a weapon of aggression. Another indication regarding customs is that, formerly, one-on- one combat took place right in the street in front of a crowd that stayed back in order to leave the area free, whereas nowadays all is done in secret. Nowadays, the death of a man is an event that causes a commotion and it is talked about; in the past no one would have paid any attention to it. Spiritism will remove these last vestiges of barbarity, instilling humankind with the spirit of charity and fraternity.