“The mind is a complex and many-layered thing, Potter... or at least, most minds are...”

“The mind is not a book, to be opened at will and examined at leisure. Thoughts are not etched on the inside of skulls, to be perused by an invader. The mind is a complex and many-layered thing, Potter… or at least, most minds are…”

“Harry Potter must not go back to Hogwarts.“Harry Potter must stay where he is safe. He is too great, too good, to lose. If Harry Potter goes back to Hogwarts, he will be in mortal danger.”“Why?” said Harry in surprise.“There is a plot, Harry Potter. A plot to make most terrible things happen at Hogwarts School of Witchcraft and Wizardry this year.”

“Harry Potter was a highly unusual boy in many ways.”

“I sometimes find, and I am sure you know the feeling, that I simply have too many thoughts and memories crammed into my mind.”

“Then you will find yourself easy prey for the Dark Lord!" said Snape savagely. "Fools who wear their hearts proudly on their sleeves, who cannot control their emotions, who wallow in sad memories and allow themselves to be provoked so easily - weak people, in other words - they stand no chance against his powers! He will penetrate your mind with absurd ease, Potter!”

“The dementors send their love, Potter!”