“Whatever happens to your body, your soul will survive, untouched...”

“Well, you split your soul, you see, and hide part of it in an object outside the body. Then, even if one’s body is attacked or destroyed, one cannot die, for part of the soul remains earthbound and undamaged. But of course, existence in such a form . . .”

“Your qualifications, your CV, are not your life, though you will meet many people of my age and older who confuse the two. Life is difficult, and complicated, and beyond anyone's control, and the humility to know that will enable you to survive its vicissitudes.”

“You can exist without your soul, you know, as long as your brain and heart are still working. But you’ll have no sense of self anymore, no memory, no . . . anything. There’s no chance at all of recovery. You’ll just — exist. As an empty shell. And your soul is gone forever . . . lost.”

“What would your head have been doing in Hogsmeade, Potter?" said Snape softly. "Your head is not allowed in Hogsmeade. No part of your body has permission to be in Hogsmeade.”

“Of course it is happening inside your head, Harry, but why on earth should that mean that it is not real?”

“Because to confide a part of your soul to something that can think and move for itself is obviously a very risky business.”