Who said "A leader must sometimes stand alone to do what is right."?

This quote is attributed to Marcus Brutus.

A leader must sometimes stand alone to do what is right. - Marcus Brutus

"A leader must sometimes stand alone to do what is right."

Marcus Brutus Leadership

Senator General Ancient Rome 85–42

"Et tu, Brute?"

"The noblest man is he who acts with honor."

"Friendship is the greatest treasure of the soul."

"A man must choose between his ambitions and his principles."

"A leader must be fair and just."

"Integrity is everything."

"One must take responsibility for one's environment."

"In this house, I make the decisions"