"Believe in the power of ideas."

"... 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...Soon or late, it is ideas, not vested interests, which are dangerous for good or evil." John Maynard Keynes 1936