We never feel our isolation and invulnerability so much as when others are angry with us. It is a salutary experience. Learn to duck in time. Our gratitude is due to the Buddha, not for having attained extinction, but for having told us about it. If you disagree you are not bound to say so.
Nothing takes one so much unawares as other people's anger.
You do not understand a thing until you can write it down. You cannot disagree with the Buddha's teaching, you can only shut your eyes. The most wonderful thing in the world is silence. This is the clue to much of the Buddha's teaching. And so on.