It's interesting how you continue to repeat this quote, as if it makes a case against common sense. It's almost as if you think Einstein was criticizing common sense as being the same as prejudice. I don't read the quote the same way, I am sorry. I understand that Einstein is using the word "prejudices" to define experiences, or the cumulative effect of experience combined with wisdom. He is saying that "prejudice" is inherent in all of mankind, and this is not necessarily a bad thing, as many times, it helps to forge our common sense. For you, the word "prejudice" conjures up an automatically negative meaning, when in fact, it is sometimes the opposite. Judges are prejudiced against repeat offenders... this is a good thing. The ACLU is prejudiced against racists... again, a good thing. Your problem is your predefined constraints of word definition, which do not allow you to be open-minded and objective. Along with the simple word, and simple definition, is several other factors, context, inflection, intent. It's much more complicated than simply saying this is black and this is white.