[His] history has been written many times by newspaper men and army officers, but I find no account of him which is entirely correct. I met him perso… - Charles Eastman

The first bambeday, or religious retreat, marked an epoch in the life of the youth... Having first prepared himself by means of the purifying vapor-bath, and cast off as far as possible all human or fleshly influences, the young man sought out the noblest height, the most commanding summit in all the surrounding region. Knowing that God sets no value upon material things, he took with him no offerings or sacrifices other than symbolic objects, such as paints and tobacco. Wishing to appear before Him in all humility, he wore no clothing save his moccasins and breech-clout. At the solemn hour of sunrise or sunset he took up his position, overlooking the glories of earth and facing the “Great Mystery,” and there he remained, naked, erect, silent, and motionless, exposed to the elements and forces of His arming, for a night and a day to two days and nights, but rarely longer. *Sometimes he would chant a hymn without words, or offer the ceremonial “filled pipe.” In this holy trance or ecstasy the Indian mystic found his highest happiness and the motive power of his existence.

The elements and majestic forces in nature, Lightning, Wind, Water, Fire, and Frost, were regarded with awe as spiritual powers, but always secondary and intermediate in character.

It was said of him in a joking way that his legs were bowed like the ribs of the ponies that he rode constantly from childhood. ... It is told that after a buffalo hunt the boys were enjoying a mimic hunt with the calves that had been left behind. A large calf turned viciously on Sitting Bull, whose pony had thrown him, but the alert youth got hold of both ears and struggled until the calf was pushed back into a buffalo wallow in a sitting posture. The boys shouted: "He has subdued the buffalo calf! He made it sit down!" And from this incident was derived his familiar name of Sitting Bull.