Eckhart Tolle 50 Best Life Lessons, Teachings And Quotes By Eckhart Tolle Eckhart Tolle popularized the idea that we all need to live in the Now. We cannot go back and relive yesterday, and we cannot leap forward and live in tomorrow. Yet, that is what many people endeavor to do - going over and over the past, and planning and stressing over that which will happen tomorrow. His philosophy does not mean that we should stop learning from the past or that we should not plan for tomorrow. Rather, it means that we should focus on what we can do right now to make a difference.You can learn more about this concept by reading this book.