"I forgive you"

I was assisting my boss installing a plasma television on a wall bracket in a customer's house.
He recommended that I drill out the mounting holes in the bracket so the bolts could be put in easily.
I only drilled out two of the holes, and as a result we could not fit all four bolts. I apologized, and he said "I forgive you".
I felt pleasantly surprised. I was grateful for his generosity in accepting my apology and holding no resentment. I felt relieved to discover that the matter was now complete. I had learned from my mistake, and he had moved on to the next task.
He has inspired me by his example saying "I forgive you" in a way that shows he really means it.