In an earlier post, The Joy of Learning, I began to describe the importance of perception in teaching that cultivates that joy. There I tried to show that all learning begins with perception and that the degree to which a perception impacts us is the determined by how much attention we give to that perception.
Here is the corrollary: just as truth, goodness, and beauty can only enter the soul through perceiving them (I think), so evil finds its entry into the mind and the heart through what we perceive.
Therefore, all instruction is necessarily and thoroughly moral, though, happily, much is ineffective.
