ING

leggo witnesses different backgrounds,talents,experiences and goals.

he is not only learning some principals and his experiences in a one-way
relationship with his students . he always is living with his students, witnessing their experiences that adds to his experiences. so the "ing" form is always ready in his grammering.

He is not stopped by his label, position,admiration....
he lives in his teaching, it is a kind of learning for him also.