Who said "The greatest weakness is to fear being thought weak."?

This quote is attributed to Pythagoras.

The greatest weakness is to fear being thought weak. - Pythagoras

"The greatest weakness is to fear being thought weak."

Pythagoras Courage

Mathematician/Philosopher Ancient Greek 570–495

"Choose silence of all virtues, for it is the ornament of the wise."

"A friend is a second self."

"Do not allow the deep to possess your mind, nor the heights to disturb your equanimity."

"Educate the children and it won't be necessary to punish the men."

"Never let fear stop you from chasing your dreams."

"Courage is being afraid but doing it anyway."

"Sometimes you gotta do what you gotta do."

"Sometimes you have to be the monster to stop the monsters."