A gigantic thank you to my actual biological human brother (not really, but kind of really), the one and only ROB BELL, for being my guest on Substack this week. Each Sunday, I and a special guest -- and a beautiful community of over 100,000! -- write ourselves letters from a place of unconditional love. Rob introduced the always relevant and relatable topic of learning to live in and embrace the present (This), versus always striving for something different, bigger, better, more (It). What if w

How much do you know about the human body? | National Geographic