"In the age of information, ignorance is a choice." I think I'm going to turn this quote into a colourful poster and use it in the classroom, to refer to when students (or parents of students) choose to use the excuse "I didn't know.
Transcendentalism is based on personal experience, everyone needs to trust their intuition. Even though we all look at the same "stars", we interpret things differently and they effect us differently as well.
I'm only responsible for what I say, not for what you understand. Although as an author I am responsible for making readers understand--a reader who doesn't understand is an unhappy reader. (And there is some value to leaving some questions unanswered.