We must remember that regardless of our differences in rank we are all equal as human beings. You can always tell how caring and compassionate others are in their actions towards those "below" them. Of course you are going to treat your black belt professor kindly, but how do you treat the white belt taking their first class? In spite of the division in belt rank there must be no division as people.
Chris Matakas, My Mastery: Learning to Live through Jiu Jitsu
equality, golden-rule, jiu-jitsu, martial-arts