Who said "Those skilled in combat do not become angered."?

This quote is attributed to Sun Tzu.

Those skilled in combat do not become angered. - Sun Tzu

"Those skilled in combat do not become angered."

Sun Tzu Patience

Military Strategist Chinese 544–496

"All warfare is based on deception."

"Know your enemy and know yourself."

"If you know the enemy and know yourself, you need not fear the result of a hundred battles."

"The supreme art of war is to subdue the enemy without fighting."

"Patience is a virtue I'm still learning."

"I may be a redhead, but I'm not a hothead."

"Patience is a virtue."

"Patience is a virtue I never learned."