Severus Snape

"The strong do not seek permission; they seize opportunity."

"Your potential remains unrealized because you lack conviction."

"Those who master the present control the future."

"Inspiration without action is merely pleasant daydreaming."

"The pursuit of beauty is the refuge of shallow minds."

"You will learn more from your defeats than your victories."

"Solitude is where the strong refine themselves."

"Those who cannot face themselves cannot face the world."

"Your worth is measured by what you contribute, not what you consume."

"It is our choices that show what we truly are, far more than our abilities."

"Dunderheads, the lot of you."

"I don't care if you blow yourselves up, as long as you don't take the school with you."

"You are here to learn the subtle science and exact art of potion-making."

"One of your classmates will try to kill you this year."

"Foolish boy, thinking bravery is the answer to everything."

"Success is not measured by popularity."

"I have yet to see a pair of eyes more foolish than yours, Potter."

"Friendship is a weakness for those without true purpose."

"The weak do not deserve protection."

"There is nothing noble in suffering needlessly."

"Mind you stir counter-clockwise, or the entire cauldron will explode."

"Pay attention, or pay with your life."

"Your mother was a remarkable woman, whatever her son may be."

"Talent without dedication is merely wasted potential."

"I see no reason to lower our standards for the likes of you."

"The art of potion-making requires precision and discipline."

"Arrogance leads to one's downfall."

"Your assumption of safety here is a grave mistake."

"Knowledge is the only power worth pursuing."

"I expect perfection in my classroom, not mediocrity."