Quote by Paul Samuelson
"The only thing constant is change itself."
More from Paul Samuelson
"Economics is not about money; it's about life choices."
"The consumer, so it is said, is the king each consumer is a voter who uses his money as votes to get the things done that he wants done."
"Good questions outrank easy answers."
"Samuelson's Law: The recollection of past performance is a poor guide to future results."