Translation of unpersönlich

This is almost six hours, a long time for someone who has children and a day job. I recommend that we write eachother shorter emails and in both languages. Spanish and English next to eachother.
The belief of somebody that a race or a group of people to which he belongs is superior to another. Even though the word itself stems from the word 'race', its meaning must be generalized.
We arrived without any more power back in the village of Sapa and went for dinner right away. We went to bed early, because of the physical exercise and because we did not sleep well a night earlier.