“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...”
“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!”
“He had discovered that people who allow themselves to be blown about by the winds of emotion and impulse are always unhappy people.”
“A man who wears his heart on his sleeve is a rarity, yet often underappreciated.”
“Oblivion is full of people who allow the opinions of others to overrule their belief in themselves.”
“People who bring sunshine into the lives of others, cannot keep it from themselves.”