We not only grow from our positive experiences but also from our hardships. Therefore we must embrace our sadness and own it, for without the pain, there would be no glory. My teachers played their part in my evolution, and I'm sure they were doing their best. Now as a teacher, I use what I've learned, and it has served me well. I hope they can't and they won't, and it's right, because I'm sure I too have hurt in my weakness, sometimes without even being aware.
Awareness is the key.
My wish for my students is that they reject all of my signals that in any way caused pain to another. My awareness continues outward in its explosive expanse into the universe which is always so much more than we'll ever understand.