"Potter has no chance whatsoever of becoming an Auror!"
Professor McGonagall got to her feet too, and in her case this was a much more impressive move. She towered over Professor Umbridge. "Potter," she said in ringing tones, "I will assist you to become and Auror if it is the last thing I do! If I have to coach you nightly I will make sure you achieve the required results!"
Harry Potter and the Order of the Phoenix