How does the point of view contribute to how the events are described in the passage in Harry Potter

Which would be the most credible source for researching the effects of smoking? letter from your grandfather web page about someone’s lung cancer report prepared by a tobacco company research article in a scientific journal

According to aristotle, what is an "artistic" proof?

How can you sit there calmly eating muffins when we are in this horrible trouble i cant make out you seen to me to be perfectly heartless who said this quote