(Red) indians (read native north americans) don't know pain. It's a stupid, prejudicial saying in Germany. It's often used instead of the more common "boys don't cry", and with the same intention.
The second line, is difficult to translate. A rough translation would be:
"An high standard of culture/education/quality only looks like arrogance for those that fall below that standards."
The saying was coined by Klaus Kinski, a genius actor best known for playing psychopathic villains. Or maybe better known for his eccentric personality.