Who said "A king must know when to strike and when to hold his hand."?

This quote is attributed to Edward I.

A king must know when to strike and when to hold his hand. - Edward I

"A king must know when to strike and when to hold his hand."

Edward I Leadership

Military King English 1239–1307

"I will to God as I am king of England, I would be worthy to be king of France."

"The conquest of Wales was not achieved by the sword alone, but by the steadfastness of purpose."

"Laws are the foundation upon which all kingdoms rest."

"I have spent my fortune and my blood to make England great."

"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"