“let us not teach / what we have learned badly / and not profited by”
“Among the many short cuts to science, we badly need someone to teach us the art of learning with difficulty.”
“We best teach what we ourselves have learned.”
“Try to learn to let what is unfair teach you.”
“Our parents teach us the very first things we learn. They teach us about hearts.”
“We teach what we need to learn. And we teach it until we get it.”