Who said “The best way to keep one's word is not to give it.”?

“Promise is most given when the least is said.”

“Some persons make promises for the pleasure of breaking them.”

“But I have promises to keep, and miles to go before I sleep, and miles to go before I sleep.”

“When a man takes an oath, Meg, he's holding his ownself in his own hands. Like water. And if he opens his fingers then- he needn't hope to find himself again.”

“All promise outruns performance.”

“A leader is a dealer in hope.”

“Who saves his country violates no law.”

“Greatness is nothing unless it be lasting.”

“There are only two forces that unite men -- fear and interest.”

“From the heights of these pyramids, forty centuries look down on us.”

“Respect the burden.”