Autores:
  • No hay medicina como la esperanza, ni incentivo tan grande, ni tónico tan poderoso como la expectativa de algo mañana.

    Orison Swett Marden (2015). “He Can Who Thinks He Can, and Other Papers on Success in Life: From the Renowned Author of Inspirational Works like How to Get what You Want, Prosperity and How to Get It, The Miracles of Right Thought, Self-Investment and Masterful Personality”, p.37, e-artnow