"Legilimency uses Magic Power to extend the caster's senses into another person's mind, studying complex emotions, memories, and even thoughts based on the feedback received. Academia has yet to classify Legilimency as Dark Arts, but in the minds of most wizards, Legilimency is undoubtedly evil...
"When beginners practise Legilimency, they must not assume that their target's head is a book or photo album. The brain and soul are the most mysterious parts of the human body. They will not simply open themselves to you for wanton perusal just because you mutter a spell and wave your wand...
"Legilimency is not a Pensieve. It is more like a complete ritual. To use Legilimency, you must find a way to break through the other person's defences. Perhaps you have had similar experiences: facing a wise elder or a stern-looking parent, you feel that their gaze is piercing, as though they can see through to the thoughts in your heart. That, too, is a technique—making the other person doubt themselves, letting their emotions waver and exposing a flaw...
"There is a saying in both the wizarding world and Muggle society: 'The eyes are the windows to the soul.' Under normal circumstances, Legilimency practitioners choose eye contact as their medium. When locking eyes, they send out their magical senses, entering the other person's mind through their eyes...
Harry held his teacup in both hands and listened with a serious expression, though his gaze was somewhat unfocused.
Many familiar faces flashed through his mind, along with their memorable eyes: Dumbledore's blue eyes were always profound, Professor Snape's black eyes always cold and hollow, and Voldemort's slit pupils like venomous snakes choosing their prey...
Had Dumbledore ever used Legilimency on him?
He was not sure.
The latter two certainly had. Harry could not help recalling those