Was it silly to ask?
No. You can email HR or recruiters to ask again.
Try to check out the company website, which may list these 10 principles somewhere.
HonestlyHowever, if the CEO did not even briefly highlight some of these 10 principles to you during the interview, it probably means that he does not really care very much about these 10 principles.
Furthermore, you already emailed and asked their employees about these 10 principles, and got no reply. Again, it probably means that they don't care about these principles either.
In reality, lots ofmany companies have lots of meaningless slogans and principles, which serve no practical purposes and therefore, no employees in the companies really care about these (Yeah, not even the CEO cares).