"The only thing that really matters in life is what you do for others."

"The African is my brother—but he is my younger brother by several centuries."

"The greatest discovery of all time is that a person can change his future by merely changing his attitude."

"The human race is a race of slaves, and it will remain so until it learns to think for itself."

"We are all in the same boat, in a stormy sea, and we owe each other a terrible loyalty."