Confucius

"Ignorance is the night of the mind, but a night without moon and star."

"Forget injuries, never forget kindnesses."

"Do not do to others what you do not want done to yourself."

"To be able under all circumstances to practice five things constitutes perfect virtue; these five things are gravity, generosity of soul, sincerity, earnestness and...

"They must often change who would remain constant in happiness and wisdom."

"You will never know how sharp a sword is unless it's drawn from its sheath."

"Never give a sword to a man who can't dance."

"It is more shameful to distrust our friends than to be deceived by them."

"The Essence of Knowledge is, having it, to use it."

"Be not ashamed of mistakes and thus make them crimes."