“The main function of man is not to exist, but to live. I'm not going to waste my days trying to lengthen them. I will use my time.” Jack London Words of Science and Wisdom, Words About People Motivational Coaching with Dr. Tayfun Topaloğlu 👉 Apply “The main function of man is not to exist, but to live. I'm not going to waste my days trying to lengthen them. I will use my time.” Jack London