Understand

Go on, take a peek.
You know you want to see what is on the inside.

It cuts both ways. This I finally understand, a little too late.

"I am trying to learn that this playful man who teases me is the same as that serious man talking money to me so seriously he does not even see me anymore and that patient man offering me advice in times of trouble and that angry man slamming the door as he leaves the house. I have often wanted the playful man to be more serious, and the serious man to be less serious, and the patient man to be more playful. As for the angry man, he is a stranger to me and I do not feel it is wrong to hate him. Now I am learning that if I say bitter words to the angry man as he leaves the house, I am at the same time wounding the others, the ones I do not want to wound, the playful man teasing, the serous man talking money, and the patient man offering advice. Yet I look at the patient man, for instance, whom I would want above all to protect from such bitter words as mine, and though I tell myself he is the same man as the others, I can only believe I said those words not to him, but to another, my enemy, who deserved all my anger."
~Lydia Davis, Trying to Learn.