Nothing can be settled in isolation. Every use of our resources is at the expense of an alternative use. - John Maynard Keynes

Words ought to be a little wild, for they are the assault of thoughts on the unthinking.

Marshall, remembering his mixed parentage, used to say 'Francis is a charming fellow, but you must be careful with Ysidro!'"

The ideas of economists and political philosophers, both when they are right and when they are wrong, are more powerful than is commonly understood. Indeed the world is ruled by little else. Practical men, who believe themselves to be quite exempt from any intellectual influences, are usually the slaves of some defunct economist. Madmen in authority, who hear voices in the air, are distilling their frenzy from some academic scribbler of a few years back...But, soon or late, it is ideas, not vested interests, which are dangerous for good or evil.