Invest three percent of your income in yourself (self-development) in order to guarantee your future.
Brian Tracy
Brian Tracy
Karl Lagerfeld
Doug Coupland
Paul Kagame
Brian Tracy
Harry S. Truman
Jimmy Carter
Rainer Maria Rilke
Peter Drucker
Blaise Pascal
Frederick Douglass
Alvin Toffler
Robert H. Schuller
Miriam Makeba
Warren G. Bennis