When a teacher is indistinguishable from a loving, protective and nurturing parent, they have discovered the true art of teaching. For they switch on the prefrontal cortex, they abide by the rules of evolution... we are only supposed to learn from one we trust as family should.
Only when a teacher is a mirror of the good heart are they a teacher, for only then does the higher brain come alive and learn with ease.
What the relaxed student who feels safe will learn with ease, the tense or frightened student will struggle with. A teacher thus must always realise that the right emotional environment is key to the art of teaching.
A teacher is an igniter, a fire-starter, always ready to provide fuel for the blazes they set in motion.
Every real teacher is a teacher of the heart, regardless of the subject matter.