Peter Drucker Management Quotes In Hindi And English By Editorial Team - March 30, 2015 Facebook Twitter Google+ Pinterest WhatsApp A manager is responsible for the application and performance of knowledge. Business, that’s easily defined – it’s other people’s money. Making good decisions is a crucial skill at every level. Never mind your happiness; do your duty. Plans are only good intentions unless they immediately degenerate into hard work. The aim of marketing is to know and understand the customer so well the product or service fits him and sells itself. The best way to predict the future is to create it. The computer is a moron. The only thing we know about the future is that it will be different. The purpose of a business is to create a customer.