Who said "The battlefield is the proving ground of character."?

This quote is attributed to Themistocles.

The battlefield is the proving ground of character. - Themistocles

"The battlefield is the proving ground of character."

Themistocles Courage

Statesman General Ancient Greece 524–460

"A man is not finished when he is defeated. He is finished when he quits."

"The victor will not be asked afterwards whether he told the truth."

"Persuasion is a far more powerful weapon than force."

"Do not despise the enemy that is down, for fortune is fickle."

"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."