Buddhism stresses the interconnectedness of all life.

Buddhism Day by Day

Wisdom for Modern Life by Daisaku Ikeda
Friday, August 30, 2013:

 

Buddhism stresses the interconnectedness of all life. It is only the limited capacity of our senses that causes us to place so much stock in the separation between "them" and "us." Because of this interconnectedness, by using violence, you not only injure or destroy the other person but also yourself. Those who use violence and devalue others' lives actually devalue and ruin their own lives.