"Freedom has cost too much blood and agony to be relinquished at the cheap price of rhetoric."

"Never buy a thing you do not want, because it is cheap, it will be dear to you."

"There is nothing cheaper than an opinion."

"That man is the richest whose pleasures are the cheapest."

"One morning I shot an elephant in my pajamas. How he got in my pajamas I'll never know."

"The happiness of credulity is a cheap and dangerous quality of happiness, and by no means a necessity of life."