I feel friendship towards philosophers, but towards sophists, teachers of literature, or any other such kind of godforsaken people, I neither feel friendship now, nor may I ever do so in the future.

This quote is saying that the speaker feels friendship towards philosophers, but not towards anyone else who teaches literature or other subjects that are not highly regarded. The speaker indicates that in the past they may not have felt such a friendship and in the future they do not think they have the potential to do so either.