Who said “There is no such uncertainty as a sure thing.”?

“If you do know that here is one hand, we'll grant you all the rest.”

“In this world nothing can be said to be certain, except death and taxes.”

“It is the dull man who is always sure, and the sure man who is always dull.”

“The best lack all conviction, while the worst are full of passionate intensity.”

“Ah, what a dusty answer gets the soul when hot for certainties in this our life!”

“The heart benevolent and kind The most resembles God.”

“When chill November's surly blast Made fields and forests bare.”

“Their sighan', cantan', grace-proud faces, Their three-mile prayers, and half-mile graces.”

“Let us do or die.”

“Dare to be honest and fear no labor.”

“Suspense is worst than disappointment.”