Wisdom that you do not get after you have struggled long, deserves to be considered. “Buck” is an artistic documentary selected at the Sundance Festival. The subject is Buck Brannaman, a famous American horse trainer, a real cowboy. He argues that a horse mirrors your soul, and sometimes you may not like what you see. Buck travels throughout America for nine months to help horses who have problems with people. Buck, who grew up in abuses, developed almost magical ability to transform horses and people through compassion, respect and understanding.