Image Credit | espeakers As a motivational speaker, author and politician, Les Brown has risen to international prominence by delivering a high energy message which tells people how to shake off mediocrity and live up to their greatness. Below are a compilation of 42 of his greatest inspirational quotes to keep your motivational at an all time high: 1. “Be willing to go all out, in pursuit of your dream. Ultimately it will pay off. You are more powerful than…