Lately, only those whom I could not save
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 this easily — weak people, in other words — they stand no chance against his powers! He will penetrate your mind with absurd ease, Potter!”
“I am not weak,” said Harry in a low voice, fury now pumping through him so that he thought he might attack Snape in a moment.
“Then prove it! Master yourself!” spat Snape. “Control your anger, discipline your mind! We shall try again! Get ready, now! Legilimens!