This is the pedagogical paradox. The person and the teacher is required precisely because the knowledge itself is nontransferable from teacher to student.
Rebecca GoldsteinPlato dramatically puts the detachment of the philosopher from his time this way: to philosophize is to prepare to die.
Rebecca GoldsteinPhilosophical progress changes what we take to be "intuitively" obvious, and this change covers up the tracks of the laborious arguments that preceded the changes. We don't see these changes, because we see with them.
Rebecca GoldsteinEverybody have equal rights to a life of full flourishing. Philosophy slowly, slowly has given us arguments saying, look, you already committed to your own life flourishing, and you're being inconsistent if you don't expand it. So philosophy often works in trying to show us that there's an inner incoherence in our points of view. We're all committed to one thing when it comes to us and our own kind, but we're not willing to expand it and we're guilty of inconsistency.
Rebecca Goldstein