"I just know so many people who have six or seven foreign languages and have read everything and have musical training and they are still dorks"

This quote by Joseph Epstein is a humorous way of explaining that having a great deal of knowledge and skills does not necessarily make somebody cool or popular. He is indicating that even if someone is highly educated and has a large range of talents, they can still be socially awkward or "dorks". This quote is a suggestion that intelligence and talent do not always correspond to social success. It is also a tip that we should not evaluate individuals based upon their achievements or lack thereof. Everyone has their own special qualities and skills, and we ought to appreciate them for who they are, not what they have attained.