The difficulty lies not so much in developing new ideas as in escaping from old ones.

When the facts change, I change my mind. What do you do, sir?

In the long run we are all dead.

Practical men, who believe themselves to be quite exempt from any intellectual influences, are usually the slaves of some defunct economist.

Nothing is more powerful than an idea whose time has come.

-- Victor Hugo

I have never let my schooling interfere with my education.

-- Mark Twain

There is nothing impossible to him who will try.

-- Alexander the Great

Let those who will, write the nation's laws, if I can write its textbooks.

-- Paul Samuelson

I don't care who writes a nation's laws, or crafts its advanced treaties, if I can write its economics textbooks.

-- Paul Samuelson

If socialists understood economics, they wouldn't be socialists.

-- Friedrich Hayek