President. General of the Army. Before that, Cadet.

Dwight Eisenhower was a high-ranking cadet at
West Point when a low-ranking plebe came running
and accidently collided with him.

Ike yelled sarcastically,“Cadet, what is your previous
condition of servitude? You look like a barber!”

Reply: “I was a barber, sir.”

Now Ike felt deeply ashamed. Later,he told his roommate, “I’m never
going to haze another plebe as long as I live. I made a man ashamed
of the work he did to earn a living.”

Decades later, President Eisenhower still regretted how he treated that
cadet. But since that time,he adopted anew
rule: Respect every one,all the time. Everyone.