“Never promise more than you can perform.”

“It is much more difficult to measure non-performance than performance. Performance stands out like a ton of diamonds. Non-performance can almost always be explained away.”

“Of all the rash and midnight promises made in the name of love, none, Boone now knew, was more certain to be broken than "I'll never leave you.”

“In book subjects a student can only do a student's work. All that can be measured is how well he learns, rather than how well he performs. All he can show is promise.”

“In this life, no matter what anyone promises you, what allegiances of love or fealty they swear or what gods they pray to, you will never have more than what you have at this moment.”

“A man will always promise to do more than he can do to a woman he cannot understand.”

“For what it’s worth: trust your feelings. I can’t promise that you’ll never get hurt again, but I can promise you the risk is worth it.”

“Little less than a promise, and a little more than a chance.”

“Promise me no promises,
So will I not promise you:
Keep we both our liberties,
Never false and never true:
Let us hold the die uncast,
Free to come as free to go:
For I cannot know your past,
And of mine what can you know?”

“An active faith can give thanks for a promise even though it be not yet performed, knowing that God's bonds are as good as ready money.”